Per Ahlberg
Professor emeritus
My research encompasses palaeontology (from systematics and phylogeny to palaeoecology), palaeobiogeography, palaeogeography, stratigraphy and sedimentary geochemistry. Much of my effort is being directed to interpretation of the history of life and its fossil record in the Cambrian and Ordovician, and the related issue of high-resolution of geologic time through these periods using multiple chronostratigraphic methods. Altogether, this has enabled me to address a wide spectrum of palaeobiological and geological problems and has resulted in well over 125 published papers and book chapters.
Currently, I am involved in several topically and geographically wide-ranging projects. These fall under five broad themes: (1) The Ordovician deep-water shelf successions of Baltica – stratigraphy, faunal turnovers and palaeoenvironmental changes. Principal collaborators: Stig M. Bergström (Columbus, Ohio, USA), Mikael Calner (Lund, Sweden), Mats E. Eriksson (Lund, Sweden), Sven Egenhoff (Fort Collins, Colorado, USA), David A.T. Harper (Durham, England), Michael M. Joachimiski (Erlangen, Germany), Frans Lundberg (Lund, Sweden), Jörg Maletz (Berlin, Germany) and Seth A. Young (Tallahassee, Florida, USA); (2) Cambrian chronostratigraphy and intercontinental correlation. Principal collaborators: Loren E. Babcock (Columbus, Ohio, USA), Gerd Geyer (Würzburg, Germany), Arne T. Nielsen (Copenhagen, Denmark) and Shanchi Peng (Nanjing, China); (3) Cambrian palaeogeography and palaeobiogeography. Collaborators: J. Javier Álvaro (Madrid, Spain), Loren E. Babcock (Columbus, Ohio, USA) and Anna Zylińska (Warsaw, Poland); (4) Trilobite palaeobiology – functional morphology, life habits, ontogeny, and evolution. Principal collaborators: Loren E. Babcock (Columbus, Ohio, USA), Peter Cederström (Eslöv, Sweden), Euan N.K. Clarkson (Edinburgh, UK), Mats E. Eriksson (Lund, Sweden), Gerd Geyer (Würzburg, Germany) and Lukáš Laibl (Prague, Czech Republic); (5) The Alum Shale Formation of Scandinavia – stratigraphy, faunas and depositional environment. Principal collaborators: Loren E. Babcock (Columbus, Ohio, USA), Euan N.K. Clarkson (Edinburgh, UK), Sven Egenhoff (Fort Collins, Colorado, USA), Mats E. Eriksson (Lund, Sweden), David A.T. Harper (Durham, England), Arne T. Nielsen (Copenhagen, Denmark), Timothy P. Topper (Stockholm, Sweden) and Anna Zylińska (Warsaw, Poland).
Since August 2020, I am Chair of the International Subcommission on Cambrian Stratigraphy (ISCS). The primary objectives of the ISCS are to define the series and stages of the Cambrian by means of the internationally agreed rules of the International Commission of Stratigraphy (ICS) and to provide the international forum for scientific discussions and interchange on all aspects of the Cambrian.
Publikationer
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Protracted oxygenation across the Cambrian–Ordovician transition : A key initiator of the Great Ordovician Biodiversification Event?
Nevin P. Kozik, Seth A. Young, Anders Lindskog, Per Ahlberg, Jeremy D. Owens
(2023) Geobiology, 21 p.323-340
Artikel i tidskriftProgressive marine oxygenation and climatic cooling at the height of the Great Ordovician Biodiversification Event
Nevin P. Kozik, Seth A. Young, Per Ahlberg, Anders Lindskog, Jeremy D. Owens
(2023) Global and Planetary Change, 227
Artikel i tidskriftSubmarine metalliferous carbonate mounds in the Cambrian of the Baltoscandian Basin induced by vent networks and water column stratification
J. Javier Álvaro, Lars E. Holmer, Yanan Shen, Leonid E. Popov, Mansoureh Ghobadi Pour, et al.
(2022) Scientific Reports, 12
Artikel i tidskriftRe-Os geochronology for the Cambrian SPICE event : Insights into euxinia and enhanced continental weathering from radiogenic isotopes
Alan D. Rooney, Alexie E.G. Millikin, Per Ahlberg
(2022) Geology, 50 p.716-720
Artikel i tidskriftHigh-resolution carbon isotope chemostratigraphy of the middle Cambrian to lowermost Ordovician in southern Scandinavia : Implications for global correlation
Zhengfu Zhao, Per Ahlberg, Nicolas Thibault, Tais W. Dahl, Niels H. Schovsbo, et al.
(2022) Global and Planetary Change, 209
Artikel i tidskriftEarly Cambrian brachiopod-dominated shell concentrations from North-East Greenland : Environmental and taphonomic implications
David A.T. Harper, Svend Stouge, Jørgen L. Christiansen, Timothy P. Topper, Carl Alwmark, et al.
(2021) Global and Planetary Change, 204
Artikel i tidskriftReply to ‘Uppermost Cambrian carbon chemostratigraphy : The HERB and undocumented TOCE events are not synonymous’
Maoyan Zhu, Loren E. Babcock, Shanchi Peng, Per Ahlberg
(2021) Geological Magazine, 158 p.1323-1326
Artikel i tidskriftMiaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden
Per Ahlberg, Frans Lundberg, Mikael Calner, Oliver Lehnert, Peter Dahlqvist, et al.
(2021) Estonian Journal of Earth Sciences, 70 p.18-35
Artikel i tidskriftDapingian to lower Darriwilian (Middle Ordovician) graptolite biostratigraphy and correlation of the Krapperup drill core, Scania, Sweden
Jörg Maletz, Per Ahlberg
(2021) GFF, 143 p.16-39
Artikel i tidskriftUpper Darriwilian (Middle Ordovician) graptolite biostratigraphy and correlation of the Krapperup drill core, Scania, Sweden
Jörg Maletz, Per Ahlberg
(2021) GFF, 143 p.360-383
Artikel i tidskriftKilian Stobæus and his fossil collections - science, aesthetics and emotions
Magdalena Naum, Cajsa Sjöberg, Håkan Håkansson, Anders Lindskog, Mats Eriksson, et al.
(2021) Studies in the History of Daily Life (800-1600) , p.235-256
Del av eller Kapitel i bokTrilobites
Shanchi Peng, Loren E. Babcock, Per Ahlberg
(2020) Geologic Timescale 2020, 1 p.36-36
Del av eller Kapitel i bokThe Cambrian Period
Shanchi Peng, Loren E. Babcock, Per Ahlberg
(2020) Geologic Time Scale, 2 p.565-565
Del av eller Kapitel i bokThe Furongian (upper Cambrian) Alum Shale of Scandinavia : revision of zonation
Arne Thorshøj Nielsen, Magne Høyberget, Per Ahlberg
(2020) Lethaia, 53 p.462-485
Artikel i tidskriftOrdovician graptolite biostratigraphy of the Röstånga-2 drill core (Scania, southern Sweden)
Jörg Maletz, Per Ahlberg, Frans Lundberg
(2020) GFF, 142 p.206-222
Artikel i tidskriftPyritization history in the late Cambrian Alum Shale, Scania, Sweden: Evidence for ongoing diagenetic processes
Neil S. Fishman, Sven O. Egenhoff, Heather A. Lowers, Adam R. Boehlke, Per Ahlberg
(2020) aapg memoir, 120 p.83-102
Del av eller Kapitel i bokThe δ13C chemostratigraphy of Ordovician global stage stratotypes : geochemical data from the Floian and Sandbian GSSPs in Sweden
Stig M. Bergström, Birger Schmitz, Fredrik Terfelt, Mats E. Eriksson, Per Ahlberg
(2020) GFF, 142 p.23-32
Artikel i tidskriftGraptolite biostratigraphy of the Ordovician Almelund and Sularp Shale formations of the Fågelsång-3 drill core, Scania, Sweden
Jörg Maletz, Per Ahlberg
(2020) GFF, 142 p.33-51
Artikel i tidskriftOrdovician δ13C chemostratigraphy : A global review of major excursions and their ties to graptolite and conodont biostratigraphy
Stig M. Bergström, Mats Eriksson, Per Ahlberg
(2020) Stratigraphy and Timescales : Carbon Isotope Stratigraphy, 5 p.319-351
Del av eller Kapitel i bokPetrified organisms: the fossil collection of Kilian Stobæus
Anders Lindskog, Per Ahlberg, Mats Eriksson
(2020) Collecting curiosities : eighteenth century Museum Stobæanum and the development of ethnographic collections in the nineteenth century , p.116-123
Del av eller Kapitel i bokMinnesord Sven Stridsberg
Per Ahlberg, Mats Eriksson, Kent Larsson, Johan Lindgren
(2020) Geologiskt forum
ÖvrigtThe fossil alga Chaetocladus gracilis revisited : new material from the Silurian of Sweden
Johan Pettersson, Per Ahlberg, Anders Lindskog, Johan Lindgren, Mats E. Eriksson
(2020) GFF, 142 p.304-308
Artikel i tidskriftDarriwili (Keskordoviitsiumi) δ13Corg kemostratigraafia koos graptoliitide biostratigraafiaga klassikalisel röstånga alal skåne maakonna loodeosas lõunarootsis
Stig M. Bergström, Per Ahlberg, Jörg Maletz, Frans Lundberg, Michael M. Joachimski
(2020) Estonian Journal of Earth Sciences, 69 p.121-133
Artikel i tidskriftThe Furongian (late Cambrian) Biodiversity Gap : Real or apparent?
David A.T. Harper, Timothy P. Topper, Borja Cascales-Miñana, Thomas Servais, Yuan Dong Zhang, et al.
(2019) Palaeoworld, 28 p.4-12
Artikel i tidskriftFossil insect eyes shed light on trilobite optics and the arthropod pigment screen
Johan Lindgren, Dan Eric Nilsson, Peter Sjövall, Martin Jarenmark, Shosuke Ito, et al.
(2019) Nature, 573 p.122-125
Artikel i tidskriftIntegrated Cambrian biostratigraphy and carbon isotope chemostratigraphy of the Grönhögen-2015 drill core, Öland, Sweden
PER AHLBERG, FRANS LUNDBERG, MIKAEL ERLSTRÖM, MIKAEL CALNER, ANDERS LINDSKOG, et al.
(2019) Geological Magazine, 156 p.935-949
Artikel i tidskriftThe complexity of mudstone diagenesis–some insight from the Tøyen Shale, Lower to Middle Ordovician, southern Sweden
Sven O. Egenhoff, Neil S. Fishman, Heather A. Lowers, Per Ahlberg
(2019) GFF, 141 p.54-67
Artikel i tidskriftThe Miaolingian, a new name for the ‘Middle’ Cambrian (Cambrian Series 3) : identification of lower and upper boundaries in Baltoscandia
Arne Thorshøj Nielsen, Per Ahlberg
(2019) GFF, 141 p.162-173
Artikel i tidskriftDarriwilian (Middle Ordovician) chemostratigraphy linked to graptolite, conodont and trilobite biostratigraphy in the Fågelsång-3 drill core, Scania, Sweden
Stig M. Bergström, Per Ahlberg, Jörg Maletz, Frans Lundberg, Michael M. Joachimski
(2018) GFF, 140 p.229-240
Artikel i tidskriftThe Lower Ordovician Tøyen Shale succession in the Fågelsång-3 drill core, Scania, Sweden
Jörg Maletz, Per Ahlberg
(2018) GFF, 140 p.293-305
Artikel i tidskriftThe Cambrian–Ordovician succession at Lanna, Sweden : stratigraphy and depositional environments
Anders Lindskog, Anna M. L. Lindskog, Jan V. Johansson, Per Ahlberg, Mats Eriksson
(2018) Estonian Journal of Earth Sciences, 67 p.133-148
Artikel i tidskriftSedimentology of the Lower Ordovician (upper Tremadocian) Bjørkåsholmen Formation at Flagabro, southern Sweden
Sven Egenhoff, Jörg Maletz, Per Ahlberg, Allison Mast, Åsa M. Frisk, et al.
(2018) GFF, 140 p.55-65
Artikel i tidskriftEarly post-embryonic development in Ellipsostrenua (Trilobita, Cambrian, Sweden) and the developmental patterns in Ellipsocephaloidea
Lukáš Laibl, Peter Cederström, Per Ahlberg
(2018) Journal of Paleontology, 92 p.1018-1027
Artikel i tidskriftChallenges in defining the base of Cambrian Series 2 and Stage 3
Xingliang Zhang, Per Ahlberg, Loren E. Babcock, Duck K. Choi, Gerd Geyer, et al.
(2017) Earth-Science Reviews, 172 p.124-139
Artikel i tidskriftCambrian trilobite biostratigraphy and its role in developing an integrated history of the Earth system
Loren E. Babcock, Shanchi Peng, Per Ahlberg
(2017) Lethaia, 50 p.381-399
Artikel i tidskriftUpper Ordovician δ13Corg chemostratigraphy, K-bentonite stratigraphy, and biostratigraphy in southern Scandinavia : A reappraisal
Stig M. Bergström, Mats E. Eriksson, Birger Schmitz, Seth A. Young, Per Ahlberg
(2016) Palaeogeography, Palaeoclimatology, Palaeoecology, 454 p.175-188
Artikel i tidskriftEdiacaran–Cambrian phosphorites from the western margins of Gondwana and Baltica
J. Javier Álvaro, Graham A. Shields-Zhou, Per Ahlberg, Sören Jensen, Teodoro Palacios
(2016) Sedimentology, 63 p.350-377
Artikel i tidskriftCambrian stratigraphy of the Tomten-1 drill core, Västergötland, Sweden
Per Ahlberg, Mats E. Eriksson, Frans Lundberg, Anders Lindskog
(2016) GFF, 138 p.490-501
Artikel i tidskriftObituary Lennart Jeppsson 1940-2015
Stig M. Bergström, Per Ahlberg, Mikael Calner, Mats Eriksson, Birger Schmitz, et al.
(2015) The Palaeontological Association Newsletter, 89 p.103-105
Artikel i tidskriftThe Cambrian explosion: Its timing and stratigraphic setting
Sebastien Clausen, J. Javier Alvaro, Lea Devaere, Per Ahlberg, Loren E. Babcock
(2015) Annales de Paléontologie, 101 p.153-160
Artikel i tidskriftExotic trilobites from the uppermost Cambrian Series 3 and lower Furongian of Sweden
Anna Zylinska, Thomas Weidner, John Ahlgren, Per Ahlberg
(2015) Acta Geologica Polonica, 65 p.21-67
Artikel i tidskriftGlobal climate, sea level cycles, and biotic events in the Cambrian Period
Loren Babcock, Shan-Chi Peng, Carlton E. Brett, Mao-Yan Zhu, Per Ahlberg, et al.
(2015) Palaeoworld, 24 p.5-15
Artikel i tidskriftA blind trilobite with Baltic affinities from Cambrian Series 3 of the Iberian Chains, Spain, and its stratigraphical and palaeobiogeographical significance
Juan B. Chirivella Martorell, Eladio Linan, Per Ahlberg, Rodolfo Gozalo
(2015) GFF, 137 p.175-180
Artikel i tidskriftIntraspecific variation and taphonomic alteration in the Cambrian (Furongian) agnostoid Lotagnostus amerkanus: new information from China
Shanchi Peng, Loren Babcock, Xuejian Zhu, Per Ahlberg, Fredrik Terfelt, et al.
(2015) Bulletin of Geosciences, 90 p.281-306
Artikel i tidskriftSphenothallus from the Furongian (Cambrian) of Scandinavia
Sarah Elizabeth Stewart, Euan Neilson Kerr Clarkson, John Ahlgren, Per Ahlberg, Brigitte Schoenemann
(2015) GFF, 137 p.20-24
Artikel i tidskriftMollusk maxima and marine events in the Middle Ordovician of Baltoscandia
Anders Lindskog, Mats Eriksson, Carsten Tell, Fredrik Terfelt, Ellinor Martin, et al.
(2015) Palaeogeography, Palaeoclimatology, Palaeoecology, 440 p.53-65
Artikel i tidskriftThe ontogeny of Ellipsocephalus (Trilobita) and systematic position of Ellipsocephalidae
Lukas Laibl, Oldrich Fatka, Petr Budil, Per Ahlberg, Michal Szabad, et al.
(2015) Alcheringa, 39 p.477-487
Artikel i tidskriftSedimentology of SPICE (Steptoean positive carbon isotope excursion): A high-resolution trace fossil and microfabric analysis of the middle to late Cambrian Alum Shale Formation, southern Sweden
Sven O. Egenhoff, Neil S. Fishman, Per Ahlberg, Jörg Maletz, Allison Jackson, et al.
(2015) Geological Society of America. Special Papers, 515 p.87-102
Artikel i tidskriftIn memoriam : Lennart Jeppsson - banbrytande paleontolog
Per Ahlberg, Stig M. Bergström, Mikael Calner, Mats Eriksson
(2015) Geologiskt Forum , p.25-27
Artikel i tidskriftHirnantian (latest Ordovician) delta C-13 chemostratigraphy in southern Sweden and globally: a refined integration with the graptolite and conodont zone successions
Stig M. Bergstroem, Mats Eriksson, Seth A. Young, Per Ahlberg, Birger Schmitz
(2014) GFF, 136 p.355-386
Artikel i tidskriftUpper lower Cambrian (provisional Cambrian Series 2) trilobites from northwestern Gansu Province, China
Jan Bergstrom, Zhou Zhiqiang, Per Ahlberg, Niklas Axheimer
(2014) Estonian Journal of Earth Sciences, 63 p.123-143
Artikel i tidskriftSilurian graptolite biostratigraphy of the Rostanga-1 drill core, Scania - a standard for southern Scandinavia
Joerg Maletz, Per Ahlberg, Anna Suyarkova, David Kendrick Loydell
(2014) GFF, 136 p.175-178
Artikel i tidskriftLate Ordovician (Katian) spores in Sweden : oldest land plant remains from Baltica
Ahmed Salah Badawy, Kristina Mehlqvist, Vivi Vajda, Per Ahlberg, Mikael Calner
(2014) GFF, 136 p.16-21
Artikel i tidskriftProposed reassessment of the Cambrian GSSP
Loren Babcock, Shanchi Peng, Maoyan Zhu, Shuhai Xiao, Per Ahlberg
(2014) Journal of African Earth Sciences, 98 p.3-10
Artikel i tidskriftPalaeogeographical significance of upper lower Cambrian (provisional Cambrian Series 2) trilobites from Gansu Province, China
Jan Bergström, Zhiqiang Zhou, Per Ahlberg, Niklas Axheimer
(2014) Proceedings of the 4th IGCP 591 Annual Meeting , p.17-17
Konferensbidrag: abstractEvidence of global climatic and sea level cycles in the Cambrian
Loren Babcock, Shanchi Peng, Carlton E. Brett, Maoyan Zhu, Per Ahlberg, et al.
(2014) IGCP 591 Field Workshop 2014, Kunming, China, 12-21 August 2014, Extended Summary , p.9-11
KonferensbidragGlobal Cambrian trilobite palaeobiogeography assessed using parsimony analysis of endemicity
J. Javier Álvaro, Per Ahlberg, Loren E. Babcock, Osvaldo L. Bordonaro, Duck K. Choi, et al.
(2013) Early Palaeozoic Biogeography and Palaeogeography, Memoir 38 p.273-296
Del av eller Kapitel i bokA Bradoriid and Brachiopod Dominated Shelly Fauna from the Furongian (Cambrian) of Västergötland, Sweden
Timothy P. Topper, Christian B. Skovsted, David A. T. Harper, Per Ahlberg
(2013) Journal of Paleontology, 87 p.69-83
Artikel i tidskriftIn memoriam : Jan Bergström : paleozoolog, geolog och folkbildare
Per Ahlberg, Stig M. Bergström
(2013) Geologiskt Forum , p.24-27
Artikel i tidskriftJan Bergström 1938-2012
Per Ahlberg, Stig M. Bergström
(2013) Kungliga Fysiografiska Sällskapet i Lund Årsbok 2011-2012, 2011-2012 p.113-115
Del av eller Kapitel i bokGuzhangian (mid Cambrian) trilobites from siliceous concretions of the Valtorres Formation, Iberian Chains, NE Spain
J. Javier Alvaro, Samuel Zamora, Daniel Vizcaino, Per Ahlberg
(2013) Geological Magazine, 150 p.123-142
Artikel i tidskriftReappraisal of the brachiopod Acrotreta socialis von Seebach, 1865: clarifying 150 years of confusion
Timothy P. Topper, David A. T. Harper, Per Ahlberg
(2013) GFF, 135 p.191-203
Artikel i tidskriftPalynology and sedimentology of the Upper Ordovician-lowermost Llandovery in the Röstånga-1 core, southern Sweden
Ahmed S. Badawy, Per Ahlberg, Mikael Calner, Kristina Mehlqvist, Vivi Vajda
(2013) [Publication information missing] , p.39-41
Konferensbidrag: abstractPalaeokarst formation in the early Palaeozoic of Baltoscandia : evidence for significant sea-level changes in a shallow epicontinental sea
Oliver Lehnert, Mikael Calner, Per Ahlberg, Jan Ove Ebbestad, David A.T. Harper, et al.
(2013) [Publication information missing] , p.169-171
Konferensbidrag: abstractA complete record of the 'Lower' Cambrian-Middle Ordovician succession of Öland, southern Sweden, based on the Tingskullen core
Peter Dahlqvist, Mikael Calner, Oliver Lehnert, Per Ahlberg
(2013) [Publication information missing] , p.74-76
Konferensbidrag: abstractThe Drumian Isotopic Carbon Excursion (DICE) in Scania, southern Sweden : a mirror of the onset of the Marjumiid Biomere at a time of increased primary production?
Oliver Lehnert, Per Ahlberg, Mikael Calner, Michael M. Joachimski
(2013) [Publication information missing] , p.172-174
Konferensbidrag: abstractObituary Jan Bergström 1938-2012
Stig M. Bergström, Per Ahlberg
(2013) The Palaeontological Association Newsletter , p.60-62
Artikel i tidskriftThe Lower Palaeozoic of southern Sweden and the Oslo Region, Norway. Field Guide for the 3rd Annual Meeting of the IGCP project 591
(2013) Sveriges geologiska undersökning Rapporter och Meddelanden, 133
BokSilurian graptolite biostratigraphy of the Röstånga-1 drill core, Scania : a standard for southern Scandinavia
Jörg Maletz, Per Ahlberg
(2013) [Publication information missing] , p.198-200
Konferensbidrag: abstractMorphologic variation of Lotagnostus americanus from China and Russia
Shanchi Peng, Loren E. Babcock, Per Ahlberg
(2012) Journal of Guizhou University (Natural Sciences), Acta Scientiarum Naturalium Universitatis Guizhou, 29 (Supplement 1) p.182-183
Konferensbidrag: abstractMorphologic variation, taphonomy and biostratigraphic range of the agnostoid Lotagnostus (Cambrian: Furongian) from Sweden
Loren E. Babcock, Per Ahlberg, Shanchi Peng, Fredrik Terfelt, Mats Eriksson
(2012) Journal of Guizhou University (Natural Sciences), Acta Scientiarum Naturalium Universitatis Guizhou, 29 (supplement 1) p.154-155
Konferensbidrag: abstractFurongian agnostoids of Scandinavia : stratigraphic assessment and intercontinental correlation
Per Ahlberg, Fredrik Terfelt
(2012) Journal of Guizhou University (Natural Sciences), Acta Scientiarum Naturalium Universitatis Guizhou, 29 (Supplement 1) p.153-154
Konferensbidrag: abstractMorphology, ontogeny and distribution of the Cambrian Series 2 ellipsocephalid trilobite Strenuaeva spinosa from Scandinavia
Peter Cederstrom, Per Ahlberg, Loren Babcock, John Ahlgren, Magne Hoyberget, et al.
(2012) GFF, 134 p.157-171
Artikel i tidskriftFurongian (Cambrian) agnostoids of Scandinavia and their implications for intercontinental correlation
Per Ahlberg, Fredrik Terfelt
(2012) Geological Magazine, 149 p.1001-1012
Artikel i tidskriftGuide till de västgötska platåbergens geologi
Mikael Calner, Per Ahlberg
(2011) Geologiskt Forum, 70 p.17-28
Artikel i tidskriftComplete record of Furongian polymerid trilobites and agnostoids of Scandinavia : a biostratigraphical scheme
Fredrik Terfelt, Per Ahlberg, Mats Eriksson
(2011) Lethaia, 44 p.8-14
Artikel i tidskriftMaurits Lindström 1932-2009
Per Ahlberg, Stig M. Bergström, Birger Schmitz
(2011) Kungliga Fysiografiska Sällskapet i Lund Årsbok 2009-2010, 2009-2010 p.138-140
Del av eller Kapitel i bokMoulting, ontogeny and sexual dimorphism in the Cambrian ptychopariid trilobite Strenuaeva inflata from the northern Swedish Caledonides
Peter Cederstrom, Per Ahlberg, Carin H. Nilsson, John Ahlgren, Mats Eriksson
(2011) Palaeontology, 54 p.685-703
Artikel i tidskriftMorphology, ontogeny and distribution of the Cambrian ellipsocephalid trilobite Strenuaeva spinosa from Scandinavia
Peter Cederström, Per Ahlberg, John Ahlgren, Magne Höyberget, Carin H. Nilsson
(2011) GFF, 133 p.59-60
KonferensbidragThe lower Cambrian ellipsocephalid trilobite Strenuaeva from Scandinavia: Morphology, ontogeny, and distribution
Peter Cederström, Per Ahlberg, John Ahlgren, Magne Höyberget, Carin H. Nilsson, et al.
(2011) Museum of Northern Arizona Bulletin, 67 p.277-278
Konferensbidrag: abstractDarriwilian (Ordovician) graptolite faunas and provincialism in the Töyen Shale of the Krapperup drill core (Scania, southern Sweden)
Jörg Maletz, Per Ahlberg
(2011) Cuadernos del Museo Geominero, 14 p.327-332
KonferensbidragIntegrated higher education in palaeontology: bridging the academic gap between Denmark and Sweden
David A. T. Harper, Per Ahlberg, Johan Lindgren, Maria Liljeroth, Jan Audun Rasmussen
(2011) European Geologist, 31 p.20-20
Konferensbidrag: abstractThe Lerhamn drill core and its bearing for the graptolite biostratigraphy of the Ordovician Toyen Shale in Scania, southern Sweden
Joerg Maletz, Per Ahlberg
(2011) Lethaia, 44 p.350-368
Artikel i tidskriftPseudagnostus rugosus Ergaliev, 1980: a key agnostoid species for intercontinental correlation of upper Furongian (Cambrian) strata
Fredrik Terfelt, Per Ahlberg
(2010) Geological Magazine, 147 p.789-796
Artikel i tidskriftParadoxides brachyrhachis Linnarsson, 1883 versus Paradoxides mediterraneus Pompeckj, 1901: a problematic determination
Maria Eugenia Dies Alvarez, Adrian W. A. Rushton, Rodolfo Gozalo, Gian Luigi Pillola, Eladio Linan, et al.
(2010) GFF, 132 p.95-104
Artikel i tidskriftA Tiny Eye Indicating A Planktonic Trilobite
Brigitte Schoenemann, Euan N. K. Clarkson, Per Ahlberg, Maria E. D. Alvarez
(2010) Palaeontology, 53 p.695-701
Artikel i tidskriftSkeletal carbonate productivity and phosphogenesis at the lower-middle Cambrian transition of Scania, southern Sweden
J. Javier Alvaro, Per Ahlberg, Niklas Axheimer
(2010) Geological Magazine, 147 p.59-76
Artikel i tidskriftThe lower Cambrian eodiscoid trilobite Calodiscus lobatus from Sweden : morphology, ontogeny and distribution
Peter Cederström, Per Ahlberg, Carin H. Nilsson, Euan N.K. Clarkson, Niklas Axheimer
(2009) Palaeontology, 52 p.491-539
Artikel i tidskrift'Mediterranean Province' hyoliths from the middle Cambrian and Upper Ordovician of Sweden
John M. Malinky, Mats Eriksson, Per Ahlberg
(2009) GFF, 131 p.281-291
Artikel i tidskriftThe lower Cambrian eodiscoid trilobite Calodiscus lobatus: morphology, ontogeny and distribution
Per Ahlberg, Peter Cederström, Euan N.K. Clarkson, Carin H. Nilsson, Niklas Axheimer
(2009) [Publication information missing] , p.14-15
Konferensbidrag: abstractGeologiutbildning vid Lunds universitet - förändring och anpassning
Per Ahlberg
(2009) Proceedings Utvecklingskonferens Lunds universitet 09 , p.21-21
KonferensbidragCambrian high-resolution biostratigraphy and carbon isotope chemostratigraphy in Scania, Sweden: first record of the SPICE and DICE excursions in Scandinavia
Per Ahlberg, Niklas Axheimer, Loren E. Babcock, Mats Eriksson, Birger Schmitz, et al.
(2009) Lethaia, 42 p.2-16
Artikel i tidskriftBradoriid arthropods from the lower-middle Cambrian of Scania, Sweden
Maria Eugenia Dies Alvarez, Rodolfo Gozalo, Peter Cederstrom, Per Ahlberg
(2008) Acta Palaeontologica Polonica, 53 p.647-656
Artikel i tidskriftFossilt bajs berättar om rovdjur
Mats Eriksson, Fredrik Terfelt, Per Ahlberg
(2008) Forskning & framsteg, 2008 p.54-55
Artikel i tidskriftFurongian Series (Cambrian) biostratigraphy of Scandinavia - a revision
Fredrik Terfelt, Mats Eriksson, Per Ahlberg, Loren E. Babcock
(2008) Norsk Geologisk Tidsskrift, 88 p.73-87
Artikel i tidskriftA Furongian poymerid planktonic trilobite
Brigitte Schoenemann, Euan N. K. Clarkson, Per Ahlberg, María Eugenia Dies Álvarez
(2008) Cuadernos del Museo Geominero, 9 p.361-364
KonferensbidragA new lower Cambrian eodiscoid trilobite fauna from Swedish Lapland and its implications for intercontinental correlation
Niklas Axheimer, Per Ahlberg, Peter Cederström
(2007) Geological Magazine, 144 p.953-961
Artikel i tidskriftTaxonomy of Ptychagnostus atavus: A key trilobite in defining a global Cambrian stage boundary
Per Ahlberg, Niklas Axheimer, Richard A. Robison
(2007) Geobios, 40 p.709-714
Artikel i tidskriftLower Cambrian eodiscoid trilobites from Scandinavia and their implications for intercontinental correlation
Per Ahlberg, Niklas Axheimer, Peter Cederström
(2007) New York State Museum Bulletin, 510 p.81-81
Konferensbidrag: abstractBivalved athropods (Bradoriida) from the lower-middle Cambrian transition of Scania, southern Sweden
María Eugenia Dies Álvarez, Rodolfo Gozalo, Per Ahlberg, Peter Cederström
(2007) New York State Museum Bulletin, 510 p.83-84
Konferensbidrag: abstractBradoriids (Arthropoda) from the lower-middle Cambrian of Scania, Sweden
María Eugenia Dies Álvarez, Rodolfo Gozalo, Peter Cederström, Per Ahlberg
(2007) [Publication information missing] , p.17-17
Konferensbidrag: abstractBarren intervals in the Alum Shale Formation of Scania: taphonomy, ecology, or both?
Fredrik Terfelt, Mats Eriksson, Per Ahlberg
(2007) [Publication information missing] , p.40-40
Konferensbidrag: abstract500-million-year-old feces reveal ancient food webs
Mats Eriksson, Fredrik Terfelt, Per Ahlberg
(2007) Lundadagarna i historisk geologi och paleontologi, X, Abstracts , p.20-20
Konferensbidrag: abstractThe first record of Odontopleura ovata (Trilobita) from Scandinavia: part of a middle Silurian intercontinental shelly benthos mass occurrence
Mikael Calner, Per Ahlberg, Niklas Axheimer, L Gustavsson
(2006) GFF, 128 p.33-37
Artikel i tidskriftThe middle Cambrian cosmopolitan key species Lejopyge laevigata and its biozone: new data from Sweden
Niklas Axheimer, Mats Eriksson, Per Ahlberg, Anders Bengtsson
(2006) Geological Magazine, 143 p.447-455
Artikel i tidskriftFaunal turnovers and trilobite morphologies in the upper Cambrian Leptoplastus Zone at Andrarum, southern Sweden
Per Ahlberg, Kristina Månsson, ENK Clarkson, CM Taylor
(2006) Lethaia, 39 p.97-110
Artikel i tidskriftHigh-resolution trilobite biostratigraphy and carbon isotope stratigraphy of the middle Cambrian-lower Furongian of Baltica
Per Ahlberg, Niklas Axheimer, Mats Eriksson, Birger Schmitz, Fredrik Terfelt
(2006) Geological Society of Australia, Abstracts, 84 p.5-5
Konferensbidrag: abstract24.2.1 Fossila bränslen
Per Ahlberg
(2006) Geobiosfären - en introduktion , p.490-498
Del av eller Kapitel i bok7.1.2 Stratigrafisk indelning
Per Ahlberg, Mikael Calner
(2006) Geobiosfären - en introduktion , p.106-108
Del av eller Kapitel i bok18.4 Djuphavet
Per Ahlberg
(2006) Geobiosfären - en introduktion , p.322-326
Del av eller Kapitel i bokFrån kusten till djuphavet
Mikael Calner, Per Ahlberg
(2006) Geobiosfären - en introduktion , p.315-322
Del av eller Kapitel i bok21.6 Kontinentalsockelns berggrund
Per Ahlberg
(2006) Geobiosfären - en introduktion , p.415-416
Del av eller Kapitel i bokThe middle Cambrian Lejopyge laevigata Biozone: New data from Sweden
Niklas Axheimer, Mats Eriksson, Per Ahlberg, Anders Bengtsson
(2005) Acta Micropalaeontologica Sinica, 22 p.6-7
Konferensbidrag: abstractPhosphatised olenid triobites and associated faunal elements from the Furongian (upper Cambrian) of Sweden
Per Ahlberg, Szaniawski Hubert, Clarkson Euan N.K., Bengtson Stefan
(2005) Acta Micropalaeontologica Sinica, 22 p.1-2
Konferensbidrag: abstractThe middle Cambrian Lejopyge laevigata Zone in Sweden
Niklas Axheimer, Mats Eriksson, Per Ahlberg, Anders Bengtsson
(2005) GFF, 127 p.44-44
Konferensbidrag: abstractPhosphatised olenid trilobites and associated fauna from the Upper Cambrian of Vastergotland, Sweden
Per Ahlberg, H Szaniawski, ENK Clarkson, S Bengtson
(2005) Acta Palaeontologica Polonica, 50 p.429-440
Artikel i tidskriftMorphology, ontogeny, and enrollment of the Lower Cambrian eodiscoid trilobite Calodiscus lobatus from Sweden
Peter Cederström, Per Ahlberg, Euan N.K. Clarkson
(2005) GFF, 127 p.46-46
Konferensbidrag: abstractPhosphatised olenid trilobites and associated faunal elements from the Furongian (Upper Cambrian) of Västergötland, Sweden
Per Ahlberg, Hubert Szaniawski, Euan N.K. Clarkson, Stefan Bengtson
(2005) GFF, 127 p.44-44
Konferensbidrag: abstractFurongian (upper Cambrian) biostratigraphy and trilobites of the Haslov-1 drill core, Scania, S. Sweden
Fredrik Terfelt, Per Ahlberg, Mats Eriksson, ENK Clarkson
(2005) GFF, 127 p.195-203
Artikel i tidskriftA phosphatocopid fauna from the upper Cambrian of Andrarum, southern Sweden
Fredrik Terfelt, Mats Eriksson, Per Ahlberg
(2004) GFF, 126 p.110-110
Konferensbidrag: abstractAgnostoids and intercontinental tie points in the middle and upper Cambrian of Scandinavia
Per Ahlberg, Niklas Axheimer, Mats Eriksson, Fredrik Terfelt
(2004) GFF, 126 p.108-108
Konferensbidrag: abstractThe middle Cambrian Ptychagnostus punctuosus and Goniagnostus nathorsti zones in Vastergotland, Sweden
TR Weidner, Per Ahlberg, Niklas Axheimer, ENK Clarkson
(2004) Bulletin of the Geological Society of Denmark, 51 p.39-45
Artikel i tidskriftFurongian (Upper Cambrian) biostratigraphy and trilobites of the Håslöv-1 drill core, Scania, southern Sweden
Fredrik Terfelt, Per Ahlberg, Euan N.K. Clarkson, Mats Eriksson
(2004) [Publication information missing] , p.28-28
Konferensbidrag: abstractGuide to some classical Ordovician and Cambrian localities in the Fågelsång area, Scania, southern Sweden
Stig M. Bergström, Per Ahlberg
(2004) Erlanger Geologischen Abhandlungen, 5 p.81-90
KonferensbidragMiddle and Upper Cambrian agnostoids of Scandinavia - intercontinental correlation tools
Per Ahlberg, Niklas Axheimer, Mats Eriksson, Fredrik Terfelt
(2004) [Publication information missing] , p.33-33
Konferensbidrag: abstractTrilobites and intercontinental tie points in the Upper Cambrian of Scandinavia
Per Ahlberg
(2003) Geologica Acta, 1 p.127-134
Artikel i tidskriftThe post-persculptus and pre-ascensus graptolite fauna in Scania, south-western Sweden: Ordovician or Silurian?
Tatyana N. Koren´, Per Ahlberg, Arne T. Nielsen
(2003) Instituto Superior de Correlación Geológica (INSUGEO), Serie Correlación Geológica, 18 p.133-138
KonferensbidragTvå gyllene spikar till Sverige - Globala referensprofiler utvalda i Sveriges ordovicium
Stig M. Bergström, Kent Larsson, Mats Eriksson, Per Ahlberg
(2003) Geologiskt Forum , p.32-37
Artikel i tidskriftRedescription of Holmia inusitata (Trilobita) from the Lower Cambrian of Scandinavia
JOR Ebbestad, Per Ahlberg, M Hoyberget
(2003) Palaeontology, 46 p.1039-1054
Artikel i tidskriftA core drilling through Cambrian strata at Almbacken, Scania, S. Sweden: trilobites and stratigraphical assessment
Niklas Axheimer, Per Ahlberg
(2003) GFF, 125 p.139-156
Artikel i tidskriftPhosphatised olenid trilobites from the upper Cambrian of Västergötland, Sweden
Per Ahlberg, Hubert Szaniawski, Euan N.K. Clarkson
(2003) GFF, 125 p.102-102
Konferensbidrag: abstractBradoriids and phosphatocopids from the upper Cambrian of Andrarum, Scania, Sweden
Fredrik Terfelt, Mats Eriksson, Per Ahlberg, Niklas Axheimer, Euan N.K. Clarkson
(2003) GFF, 125 p.110-110
Konferensbidrag: abstractThe Almelund Shale, a replacement name for the Upper Didymograptus Shale and the Lower Dicellograptus Shale in the lithostratigraphical classification of the Ordovician succession in Scania, Southern Sweden
SM Bergstrom, Kent Larsson, Christian Pålsson, Per Ahlberg
(2002) Bulletin of the Geological Society of Denmark, 49 p.41-47
Artikel i tidskriftOntogeny and structure of a new, miniaturised and spiny olenid trilobite from Southern Sweden
ENK Clarkson, Per Ahlberg
(2002) Palaeontology, 45 p.1-22
Artikel i tidskriftLower Palaeozoic stratigraphy at Lyby and Tängelsås, sentral Scania, southern Sweden
Mikael Erlström, Per Ahlberg, Anita Löfgren
(2001) GFF, 123 p.7-14
Artikel i tidskriftLotagnostus? : mystacinus, a rare agnostid from the Upper Cambrian of Sweden
Per Ahlberg, John Ahlgren
(2000) Acta Palaeontologica Polonica, 45 p.91-96
Artikel i tidskriftGeological fieldwork in the Kirwanveggen area
Per Ahlberg, Göran Bylund, Kent Larsson
(1992) Swedish Antarctic research programme : a cruise report. 1991/92, Dronning Maud Land, Livingston Island, South Georgia , p.13-21
Del av eller Kapitel i bok