Temporal range: Late Jurassic, Oxfordian–Berriasian
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Skeleton of Thalassemys bruntrutana
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Reptilia
Clade:
Pantestudines
Clade:
Testudinata
Clade:
Mesochelydia
Clade:
Perichelydia
Clade:
†Thalassochelydia Anquetin et al., 2017[1]
Subgroups[1]
Aplax
Cyrtura
Enaliochelys
Euryaspis
Hispaniachelys
Jurassichelon
Neusticemys
Owadowia
Pelobatochelys
Eurysternidae
Plesiochelyidae
Thalassemydidae
Protostegidae?
Sandownidae?
Thalassochelydia is a clade of extinct marine turtles from the Late Jurassic and earliest Cretaceous of Europe and South America. The group is defined as including Eurysternum, Plesiochelys and Thalassemys to the exclusion of Pelomedusa, Testudo and Protostega. While a clade uniting the families Eurysternidae, Plesiochelyidae and Thalassemydidae had been supported by phylogenetic evidence, a name was not given for the clade until 2017, when Jérémy Anquetin and colleagues coined Thalassochelydia.
While inner relationships of the clade are so uncertain as to make the monophyly of the families questionable, the significant diversity of thalassochelydians makes using the potentially invalid terms useful to describe the different morphologies.[1] The monophyly of Thalassochelydia was further supported by a later analysis by Serjocha Evers and Roger Benson in 2019, where the group, represented by Solnhofia and Plesiochelyidae was sister taxon to Sandownidae within the clade Angolachelonia, which, unlike as found by Anquetin et al. earlier, was outside Cryptodira and Testudines.[2]
^ abcAnquetin, J.; Püntener, C.; Joyce, W.G. (2017). "A Review of the Fossil Record of Turtles of the Clade Thalassochelydia" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (2): 317–369. doi:10.3374/014.058.0205. S2CID 31091127.
^Evers, S.W.; Benson, R.B.J. (2018). "A new phylogenetic hypothesis of turtles with implications for the timing and number of evolutionary transitions to marine lifestyles in the group". Palaeontology. 62 (2): 93–134. doi:10.1111/pala.12384. S2CID 134736808.
Thalassochelydia is a clade of extinct marine turtles from the Late Jurassic and earliest Cretaceous of Europe and South America. The group is defined...
Family †Sandownidae? (may also belong in Thalassochelydia) Family †Protostegidae? (may also belong in Thalassochelydia) Family †Toxochelyidae Family †Ctenochelyidae...
of softshell turtles, is known from the Late Jurassic of China. The Thalassochelydia, a diverse lineage of marine turtles unrelated to modern sea turtles...
other groups, including the proposed clade Angolachelonia (containing Thalassochelydia and Sandownidae), Paracryptodira, Macrobaenidae, Sinemydidae and Xinjiangchelyidae...
the family due to the uncertain relationships of other members of Thalassochelydia, primarily due to the lack of cranial material in Thalassemys. Anquetin...
Eurysternidae is an extinct family of turtles in the clade Thalassochelydia. It consists of several genera of marine turtles from marine deposits in Europe...
ISSN 0891-2963. Anquetin, Jérémy; André, Charlotte (2020). "The last surviving Thalassochelydia—A new turtle cranium from the Early Cretaceous of the Purbeck Group...
The Plesiochelyidae are an extinct family of turtles in the clade Thalassochelydia originally classified within the Cryptodira suborder, mostly belonging...
G. (2017). "A Review of the Fossil Record of Turtles of the Clade Thalassochelydia" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (2):...
Angolachelys and Solnhofia, sister to the entirely Late Jurassic marine group Thalassochelydia, although the concepts of the clades may shift with further phylogenetic...
Joyce. 2017. A review of the fossil record of turtles of the Clade Thalassochelydia. Bulletin of the Peabody Museum of Natural History 58(3):317-369 F...
Sandownia among other taxa, with the entirely Late Jurassic clade Thalassochelydia, where Solnhofia may be a basal member. While the placement of Solnhofia...
G. (2017). "A Review of the Fossil Record of Turtles of the Clade Thalassochelydia" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (2):...
shell regions as in Aplax. However the taxon was later referred to Thalassochelydia by Anquetin and colleagues in 2017, and due to the loss of the original...
W.G., 2017. A review of the fossil record of turtles of the clade Thalassochelydia. Bulletin of the Peabody Museum of Natural History 58 (2):317-369....
(October 2017). "A Review of the Fossil Record of Turtles of the Clade Thalassochelydia". Bulletin of the Peabody Museum of Natural History. 58 (2): 317–369...
G. (2017). "A Review of the Fossil Record of Turtles of the Clade Thalassochelydia" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (2):...
Joyce, 2017. A review of the fossil record of turtles of the clade Thalassochelydia. Bulletin of the Peabody Museum of Natural History 58 (2):317-369....
G. (2017). "A Review of the Fossil Record of Turtles of the Clade Thalassochelydia" (PDF). Bulletin of the Peabody Museum of Natural History. 58 (2):...
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