A Review of the Fossil Record of Turtles of the Clade Thalassochelydia

  title={A Review of the Fossil Record of Turtles of the Clade Thalassochelydia},
  author={J{\'e}r{\'e}my Anquetin and Christian P{\"u}ntener and Walter G. Joyce},
  journal={Bulletin of the Peabody Museum of Natural History},
  pages={317 - 369}
Abstract The Late Jurassic (Oxfordian to Tithonian) fossil record of Europe and South America has yielded a particularly rich assemblage of aquatic pan-cryptodiran turtles that are herein tentatively hypothesized to form a monophyletic group named Thalassochelydia. Thalassochelydians were traditionally referred to three families, Eurysternidae, Plesiochelyidae, and Thalassemydidae, but the current understanding of phylogenetic relationships is insufficient to support the monophyly of either… 

A Review of the Fossil Record of Nonbaenid Turtles of the Clade Paracryptodira

  • W. JoyceJ. Anquetin
  • Geography, Environmental Science
    Bulletin of the Peabody Museum of Natural History
  • 2019
Abstract The fossil record of nonbaenid paracryptodires ranges from the Late Jurassic (Kimmeridgian) to the Paleocene of North America and Europe only. Earlier remains may be present as early as

New material of “Eurysternidae” (Thalassochelydia, Pan-Cryptodira) from the Kimmeridgian of the Swiss Jura Mountains

New shell-based material from Porrentruy referable to eurysternids represents at least three distinct taxa, all of them probably new, and is characterized by a unique plastral morphology otherwise only known in very small juveniles.

The giant pliosaurid that wasn’t: revising the marine reptiles from the Kimmeridgian (Upper Jurassic) of Krzyżanowice, Poland

Marine reptiles from the Upper Jurassic of Central Europe are rare and often fragmentary, which hinders their precise taxonomic identification and their placement in a palaeobiogeographic context.

A new phylogenetic hypothesis of turtles with implications for the timing and number of evolutionary transitions to marine lifestyles in the group

A new phylogenetic hypothesis informed by high resolution computed tomographic data of living and fossil taxa is presented, indicating three independent evolutionary transitions to marine life in non‐pleurodiran turtles (plus an additional two‐three in pleurodires).

New finds of the turtle Plesiochelys in the Upper Jurassic of Portugal and evaluation of its diversity in the Iberian Peninsula

ABSTRACT Two unpublished shells of thalassochelydian turtles from Tithonian (Late Jurassic) outcrops of the Lusitanian Basin (west central Portugal) are studied here. They are recognised as

Anatomy of Rhinochelys pulchriceps (Protostegidae) and marine adaptation during the early evolution of chelonioids

A phylogeny of turtles with increased chelonioid taxon sampling and revised postcranial characters is provided, recovering protostegids as stem-chelonioids, which imply a mid Early Cretaceous origin of total-group chelonIOids and an early Late Cret Jurassic age for crown-chelanioids.

The ecomorphology of the shell of extant turtles and its applications for fossil turtles

Although the shape of the shell of turtles indeed contains an ecological signal, it is overall too weak to uncover using shell shape in paleoecological studies, at least with the methods selected.

A new species of baenid turtle from the Early Cretaceous Lakota Formation of South Dakota

Abstract. Baenidae is a clade of paracryptodiran turtles known from the late Early Cretaceous to Eocene of North America. The proposed sister-group relationship of Baenidae to Pleurosternidae, a

Vertebrate paleobiodiversity of the Early Cretaceous (Berriasian) Angeac-Charente Lagerstätte (southwestern France): implications for continental faunal turnover at the J/K boundary

ABSTRACT This contribution describes the continental micro- and macrovertebrate fauna of Angeac-Charente (Berriasian, Early Cretaceous). The rich and diversified fauna includes at least 38 different

A new species of the large-headed coastal marine turtle Solnhofia (Testudinata, Thalassochelydia) from the Late Jurassic of NW Switzerland

The morphological study clearly shows that Solnhofia brachyrhyncha is closer to Soln Hofia parsonsi than to any sandownids.



A taxonomic review of the Late Jurassic eucryptodiran turtles from the Jura Mountains (Switzerland and France)

An exhaustive reassessment of the available material provides new insights into the comparative anatomy of these turtles, which calls into question the traditional definitions of the Thalassemydidae and Eurysternidae.

Phylogenetic Relationships of Mesozoic Turtles

This revised topology has important implications for the evolution of several character complexes, because it implies that the common ancestor of all living turtles must have had a partially braced brain case and a primitive trochlear mechanism.

New data on the poorly-known Late Jurassic European turtles Thalassemys and Enaliochelys and description of a new basal eucryptodiran taxon

The detailed study of a British specimen preliminarily attributed to the plesiochelyid “Pelobatochelys” allows this attribution to be refuted and it is recognized as the only confirmed specimen of the genus Thalassemys outside Central Europe.

A new Late Jurassic turtle from Spain: phylogenetic implications, taphonomy and palaeoecology

A new genus and species of Late Jurassic turtle, Hispaniachelys prebetica gen. et sp.

Reassessment of the phylogenetic interrelationships of basal turtles (Testudinata)

Perhaps the most salient conclusion of the present study is the placement of Naomichelys speciosa as a basal member of a clade uniting meiolaniids, Mongolochelys efremovi and Otwayemys cunicularius.

New data on the poorly-known European Late Jurassic turtles "Thalassemys" and "Enaliochelys" and description of a new basal eucryptodiran taxon

The detailed study of a British specimen preliminarily attributed to the plesiochelyid “ Pelobatochelys ” allows this attribution to be refuted and it is recognized as the only confirmed specimen of the genus Thalassemys outside Central Europe.

The Oldest African Eucryptodiran Turtle from the Cretaceous of Angola

Bootstrap analysis suggests those four taxa together form a previously unrecognized monophyletic clade of marine turtles, herein named Angolachelonia clade nov., supported by the following synapomorphies: mandibular articulation of quadrate aligned with or posterior to the occiput, and basisphenoid not visible or visibility greatly reduced in ventral view.

A new pancryptodiran turtle from the Late Jurassic of Poland and palaeobiology of early marine turtles

A new pancryptodiran turtle genus and species, Owadowia borsukbialynickae, is described from the uppermost Jurassic (Tithonian, ca. 148 Ma) carbonate sediments of the Kcynia Formation in Owadow-Brzezinki Quarry, near Tomaszow Mazowiecki in central Poland and it is proposed that the new specimen belongs to a new durophagous pancrypto-turtle taxon.

Oldest known sea turtle

The discovery of an exceptionally well-preserved skeleton of the oldest known chelonioid, from the Early Cretaceous stage (about 110 million years before the present), of eastern Brazil is reported, supporting the idea that the establishment of the salt-excreting system, and the occupation of a marine habitat, may have preceded the formation of rigid paddles in the history ofChelonioids.