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Johan Lindgren

Johan Lindgren

Universitetslektor

Johan Lindgren

First chelonian eggs and carapace fragments from the Pliocene of Rhodes, Greece

Författare

  • Inken J. Mueller-Towe
  • Tina A. Kjeldahl-Vallon
  • Jesper Milan
  • Lothar H. Vallon
  • Georgios Theodorou
  • Johan Lindgren
  • Socrates J. Roussiakis
  • Richard G. Bromley

Summary, in English

Well-preserved fossil eggs and eggshell fragments from the Pliocene Apolakkia Formation of Rhodes (Greece) are described. The eggs were found in-situ in a clutch. They are sub- spherical with lengths of 53-60 mm and widths of about 40 mm. All eggs are diagenetically compressed and their original diameters are estimated at 45-50 mm. The eggshells are 0.3-0.5 mm thick, partly re-crystallized, but widely still aragonitic. They consist of needle-like crystals that form individual shell units. A few pores are preserved between these shell units. This shell-structure allows assignment to chelonian eggs in the oofamily Testudoolithidae and the oogenus Testudolithus. The external morphology, microstructure and mineralogical composition of the eggshells show close resemblance to eggs of the extant tortoise Geochelone elephantopus. Together with a small association of turtle carapace fragments from the same formation, the clutch represents the first discovery of turtle and reptilian remains from the Pliocene of the island of Rhodes.

Avdelning/ar

  • Berggrundsgeologi

Publiceringsår

2011

Språk

Engelska

Sidor

309-322

Publikation/Tidskrift/Serie

Neues Jahrbuch für Geologie und Paläontologie. Abhandlungen

Volym

262

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

E. Schweizerbart Science Publishers

Ämne

  • Geology

Nyckelord

  • Testudinata
  • eggs
  • clutch
  • Rhodes
  • Pliocene
  • Apolakkia Formation

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0077-7749