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Per Ahlberg, Skottland 2013

Per Ahlberg

Professor emeritus

Per Ahlberg, Skottland 2013

A blind trilobite with Baltic affinities from Cambrian Series 3 of the Iberian Chains, Spain, and its stratigraphical and palaeobiogeographical significance

Författare

  • Juan B. Chirivella Martorell
  • Eladio Linan
  • Per Ahlberg
  • Rodolfo Gozalo

Summary, in English

Three cranidia of a conocoryphid trilobite are described from the lower Caesaraugustan Regional Stage (upper part of provisional Cambrian Stage 5 within Cambrian Series 3) in the Iberian Chains, Spain. The material is from the upper part of the Mansilla Formation and the base of the overlying Murero Formation. It closely resembles Bailiella tenuicincta (Linnarsson, 1879), which has previously been described from the Ptychagnostus gibbus (Cambrian Stage 5) and lower P. atavus zones (lower Drumian Stage) of Baltica (Sweden and Bornholm), and from the P. atavus Zone of West Avalonia (Newfoundland). The record of B. cf. tenuicincta from the Mediterranean margin of West Gondwana provides additional evidence for considering the Acado-Baltic region a discrete biogeographical province, at least during the Cambrian 5 and Drumian ages.

Avdelning/ar

  • Berggrundsgeologi

Publiceringsår

2015

Språk

Engelska

Sidor

175-180

Publikation/Tidskrift/Serie

GFF

Volym

137

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

Taylor & Francis

Ämne

  • Geology

Nyckelord

  • Trilobites
  • Conocoryphidae
  • systematics
  • correlation
  • palaeobiogeography
  • middle Cambrian
  • Iberian Chains
  • Spain

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 2000-0863