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Thescelus ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4572447	https://www.gbif.org/species/4572447
PaleoBioDB ID (PBDB)	37640	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=37640

Rank

genus

Taxonomy (GBIF,PBDB)

Life : Animalia : Chordata : Reptilia : Testudines : Baenidae : Thescelus

Taxonomic Status (GBIF)

accepted

Classification
(PBDB,GBIF)

Rank	Name	Author
-	Eukaryota
-	Opisthokonta	Cavalier-Smith 1987
kingdom	Animalia
-	Triploblastica	Lankester 1877
-	Nephrozoa	Jondelius et al. 2002
-	Deuterostomia	Grobben 1908
phylum	Chordata	Haeckel 1847
subphylum	Vertebrata	Lamarck 1801
superclass	Gnathostomata	Gegenbauer 1874
-	Osteichthyes
-	Sarcopterygii	Romer 1955
subclass	Dipnotetrapodomorpha
subclass	Tetrapodomorpha
-	Tetrapoda
-	Reptiliomorpha	Säve-Söderbergh 1934
-	Anthracosauria	Säve-Söderbergh 1934
-	Batrachosauria
-	Cotylosauria
-	Amniota	Haeckel 1866
-	Sauropsida	Huxley 1864
class	Reptilia	Laurenti 1768
-	Testudinata
order	Testudines	Batsch 1788
-	Paracryptodira	Gaffney 1975
family	Baenidae	Cope 1882
genus	Thescelus	Hay 1908

Scientific Name

Thescelus Hay, 1908

Name Published In

Publ. Carnegie Inst., No. 75

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Thescelus	genus	belongs to Baenidae	stated with evidence	Hay, 1908
Thescelus	genus	belongs to Baenidae	stated without evidence	Gilmore, 1935
Thescelus	genus	belongs to Baenidae	stated with evidence	Gaffney, 1972
Thescelus	genus	belongs to Neurankylidae	implied	Carroll, 1988
Thescelus	genus	belongs to Baenidae	implied	Bryant, 1989
Thescelus	genus	belongs to Baeninae	stated without evidence	Holroyd and Hutchison, 2002
Thescelus	genus	belongs to Baenidae	stated with evidence	Lyson and Joyce, 2010
Thescelus	genus	belongs to Baenidae	stated without evidence	Sullivan et al., 2012
Thescelus	genus	belongs to Baenidae	stated with evidence	Joyce and Lyson, 2015

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

101 - 71 Ma
Late/Upper Cretaceous

Last Recorded Appearance

70.6 - 66.0 Ma
Late/Upper Cretaceous

Environment

terrestrial (based on Amniota)

Motility

actively mobile (based on Osteichthyes)

Taphonomy

phosphatic (based on Vertebrata)

Primary Reference (PBDB)

O. P. Hay. 1908. The fossil turtles of North America. Carnegie Institution of Washington Publication 75:1-568

Fossil Distribution

Subtaxa

Name	Status	Common Name(s)	Fossil Occurrences	Oldest	Youngest
Thescelus hemispherica species	accepted (GBIF)	No associated record in PBDB
Thescelus insiliens ✝ species	accepted (GBIF) listed (PBDB)		5	101 Ma Late/Upper Cretaceous	70.6 Ma Late/Upper Cretaceous
Thescelus rapiens ✝ species	accepted (GBIF) listed (PBDB)		2	83.5 Ma Late/Upper Cretaceous	83.5 Ma Late/Upper Cretaceous

Synonymy List

Year	Name and Author
1908	Thescelus Hay p. 94
1935	Thescelus Gilmore p. 174
1972	Thescelus Gaffney pp. 249, 297 fig. 42
1988	Thescelus Carroll
1989	Thescelus Bryant p. 37
2002	Thescelus Holroyd and Hutchison p. 181
2010	Thescelus Lyson and Joyce
2012	Thescelus Sullivan et al. p. 343
2015	Thescelus Joyce and Lyson

References

Hay O. P. (1908) The fossil turtles of North America, Carnegie Institution of Washington Publication 75, 1-568

Gilmore C. W. (1935) On the Reptilia of the Kirtland Formation of New Mexico, with descriptions of new species of fossil turtles, Proceedings of the United States National Museum 83 2978, 159-188

Gaffney E. S. (1972) The systematics of the North American family Baenidae (Reptilia, Cryptodira), Bulletin of the American Museum of Natural History 147 5, 245-312

Carroll R. L. (1988) , Vertebrate Paleontology and Evolution, 1-698

Bryant L. J. (1989) Non-dinosaurian lower vertebrates across the Cretaceous-Tertiary boundary in northeastern Montana, University of California Publications in Geological Sciences 134, 1-107

Holroyd P. A., Hutchison J. H. (2002) Patterns of geographic variation in latest Cretaceous vertebrates: evidence from the turtle component, Geological Society of America Special Paper 361, 177-190

Lyson T. R., Joyce W. G. (2010) A new baenid turtle from the Upper Cretaceous (Maastrichtian) Hell Creek Formation of North Dakota and a preliminary taxonomic review of Cretaceous Baenidae, Journal of Vertebrate Paleontology 30 2, 394-402

Sullivan R. M., Jasinski S. E., et al (2012) Re-assessment of Late Campanian (Kirtlandian) turtles from the Upper Cretaceous Fruitland and Kirtland formations, San Juan Basin, New Mexico, USA, Morphology and Evolution of Turtles, 337-387 doi:10.1007/978-94-007-4309-0_20

Joyce W. G., Lyson T. R. (2015) A Review of the Fossil Record of Turtles of the Clade Baenidae, Bulletin of the Peabody Museum of Natural History 56 2, 147-183 doi:10.3374/014.056.0203

GBIF/Paleo Database - via The Interim Register of Marine and Nonmarine Genera

Nomenclator Zoologicus. A list of the names of genera and subgenera in zoology from the tenth edition of Linnaeus, 1758 to the end of 2004. Digitised by uBio from vols. 1-9 of Neave (ed.), 1939-1996 plus supplementary digital-only volume. http://ubio.org/NomenclatorZoologicus (as at 2006). - via The Interim Register of Marine and Nonmarine Genera

as per family - via The Interim Register of Marine and Nonmarine Genera

Publ. Carnegie Inst., No. 75 - via The Interim Register of Marine and Nonmarine Genera

Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!

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