Making New Out of the Old: Recent Biological Advances on Mesozoic Marine Reptiles

A special issue of Diversity (ISSN 1424-2818). This special issue belongs to the section "Phylogeny and Evolution".

Deadline for manuscript submissions: closed (31 March 2024) | Viewed by 3067

Image courtesy of Benjamin Waterhouse Hawkins

Special Issue Editor


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Guest Editor
Centre de Recherche en Paléontologie de Paris, UMR 7207 - CNRS, MNHN, SU, Muséum National d’Histoire Naturelle, CP 38 – 57 rue Cuvier, 75005 Paris, France
Interests: systematics; phylogeny; palaeobiogeography; palaeobiology; palaeoecology and science history of Late Cretaceous marine reptiles from the northern and southern margins of the Mediterranean Tethys

Special Issue Information

Dear Colleagues,

A secondary return to aquatic life is a major evolutionary phenomenon in vertebrate history. Although some pioneers returned to aquatic life by the end of the Paleozoic era, this phenomenon is best illustrated during the Mesozoic (with reptiles) and Cenozoic (with mammals) eras.

During the Mesozoic era, about ten clades of reptiles underwent a dramatic return to aquatic life; in doing so, they colonized most marine environments, exhibiting great systematic diversity and astonishing ecological disparity. Many were among the greatest marine predators of their time, and some, such as ichthyosaurs, plesiosaurs and mosasaurs, were iconic clades of large Mesozoic ‘gigantic saurians’ that mirrored terrestrial dinosaurs.

These marine reptiles illustrate a mosaic of morphological, physiological and ecological adaptations to an aquatic lifestyle, some of which are convergent with those found in Cenozoic marine mammals, and others completely unique.

This volume aims to present recent biological advances made through the discovery of exceptionally preserved specimens and/or the use of modern methods. As such, it will focus mainly (but not exclusively) on topics such as locomotion modes and sensory systems, physiology and metabolism, reproduction and predation modes, and soft tissues and colors.

Dr. Nathalie Bardet
Guest Editor

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Keywords

  • Mesozoic
  • marine reptiles
  • biology

Published Papers (1 paper)

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Research

19 pages, 5577 KiB  
Article
How Elongated? The Pattern of Elongation of Cervical Centra of Elasmosaurus platyurus with Comments on Cervical Elongation Patterns among Plesiosauromorphs
by José Patricio O’Gorman
Diversity 2024, 16(2), 106; https://doi.org/10.3390/d16020106 - 07 Feb 2024
Viewed by 2510
Abstract
Elasmosaurids comprise some of the most extreme morphotypes of plesiosaurs. Thus, the study of their neck and vertebrae elongation patterns plays a crucial role in understanding the anatomy of elasmosaurids. In this study, the taphonomic distortion of the holotype of Elasmosaurus platyurus and its [...] Read more.
Elasmosaurids comprise some of the most extreme morphotypes of plesiosaurs. Thus, the study of their neck and vertebrae elongation patterns plays a crucial role in understanding the anatomy of elasmosaurids. In this study, the taphonomic distortion of the holotype of Elasmosaurus platyurus and its effects on the vertebral length index (VLI) values are evaluated, and a new index to describe the neck is proposed (MAVLI = mean value of the vertebral elongation index of the anterior two-thirds of neck vertebrae). The results provide a strong foundation for a new scheme of neck elongation patterns that divide the diversity of the neck elongation of plesiosauriomorphs into three categories: not-elongate (MAVLI < 95 and Max VLI < 100), elongate (125 > MAVLI > 95 and 100 < Max VLI < 135), and extremely elongated (MAVLI > 125 and Max VLI > 135). Full article
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