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Abstract <p>This paper describes a caudal vertebra of a giant sea turtle, Chelonioidea indet., from the Upper Cretaceous Malyy Prolom locality (Ryazan Region, Russia; Middle Cenomanian–Middle Santonian). The caudal vertebra, probably IV–X, with a preserved length of 3.8 cm belonged to a turtle comparable in size to the type specimen of the protostegid <i>Archelon ischyros</i> from the Campanian of the Unites States. The proportions of the vertebral centrum suggest that it belonged to a female.</p>

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A Caudal Vertebra of a Giant Sea Turtle (Testudines: Chelonioidea) from the Upper Cretaceous Deposits of the Malyy Prolom Locality (Ryazan Region, Russia)

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • I. G. Danilov,
  • A. P. Evsyutkin,
  • D. V. Grigoriev,
  • E. A. Zvonok

摘要

Abstract

This paper describes a caudal vertebra of a giant sea turtle, Chelonioidea indet., from the Upper Cretaceous Malyy Prolom locality (Ryazan Region, Russia; Middle Cenomanian–Middle Santonian). The caudal vertebra, probably IV–X, with a preserved length of 3.8 cm belonged to a turtle comparable in size to the type specimen of the protostegid Archelon ischyros from the Campanian of the Unites States. The proportions of the vertebral centrum suggest that it belonged to a female.