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Palaeoxantusia ✝

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Source Data

Source	ID	Link
Global Biodiversity Information Facility ID (GBIF)	4820628	https://www.gbif.org/species/4820628
PaleoBioDB ID (PBDB)	37925	https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=37925

Rank

genus

Taxonomy (GBIF,PBDB)

Life : Animalia : Chordata : Reptilia : Squamata : Xantusiidae : Palaeoxantusia

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
subclass	Eureptilia
-	Romeriida	Gauthier et al. 1988
-	Diapsida
-	Eosuchia
-	Neodiapsida	Benton 1985
-	Sauria	Gauthier 1984
-	Lepidosauromorpha
superorder	Lepidosauria
order	Squamata	Oppel 1811
superfamily	Scincoidea	Oppel 1811
family	Xantusiidae	Baird 1858
genus	Palaeoxantusia	Hecht 1956

Scientific Name

Palaeoxantusia Hecht, 1956

Name Published In

Am. Mus. Novit. No. 1774

Opinions (PBDB)

Name	Rank	Opinion	Evidence	Author
Palaeoxantusia	genus	belongs to Xantusiidae	stated with evidence	Hecht, 1956
Palaeoxantusia	genus	belongs to Xantusiidae	stated without evidence	Hecht, 1959
Palaeoxantusia	genus	belongs to Xantusiidae	stated with evidence	Estes, 1983
Palaeoxantusia	genus	belongs to Xantusiidae	implied	Carroll, 1988
Palaeoxantusia	genus	belongs to Xantusiidae	stated without evidence	Sullivan, 1991

Status (PBDB)

extinct

Taxon Size (PBDB)

First Recorded Appearance

63.3 - 61.7 Ma
Paleocene

Last Recorded Appearance

37.2 - 33.9 Ma
Paleogene

Environment

terrestrial (based on Diapsida)

Motility

actively mobile (based on Osteichthyes)

Diet

insectivore, herbivore (based on Xantusiidae)

Taphonomy

phosphatic (based on Vertebrata)

Primary Reference (PBDB)

R. L. Carroll. 1988. Vertebrate Paleontology and Evolution

Fossil Distribution

Subtaxa

Name	Status	Fossil Occurrences	Oldest	Youngest
Palaeoxantusia allisoni ✝ species	accepted (GBIF) listed (PBDB)	11	46.2 Ma Eocene	46.2 Ma Eocene
Palaeoxantusia amara ✝ species	accepted (GBIF) listed (PBDB)	2	55.8 Ma Eocene	55.8 Ma Eocene
Palaeoxantusia borealis ✝ species	accepted (GBIF) listed (PBDB)	2	37.2 Ma Eocene	37.2 Ma Eocene
Palaeoxantusia fera ✝ species	accepted (GBIF) listed (PBDB)	6	63.3 Ma Paleocene	50.3 Ma Eocene
Palaeoxantusia kyrentos ✝ species	accepted (GBIF) listed (PBDB)	4	46.2 Ma Eocene	46.2 Ma Eocene

Synonymy List

Year	Name and Author
1956	Palaeoxantusia Hecht
1959	Palaeoxantusia Hecht p. 135
1976	Palaeoxantusia Estes p. 508
1980	Palaeoxantusia Schatzinger
1983	Palaeoxantusia Estes
1988	Palaeoxantusia Carroll
1991	Palaeoxantusia Sullivan p. 296
2006	Palaeoxantusia Smith p. 5

References

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

Hecht M. K. (1959) Amphibians and Reptiles (in: The Geology and Paleontology of the Elk Mountain and Tabernacle Butte area, Wyoming), Bulletin of the American Museum of Natural History 117 3, 130-176

Estes R. (1976) Middle Paleocene lower vertebrates from the Tongue River Formation, southeastern Montana, Journal of Paleontology 50 3, 500-520

Schatzinger R. A. (1980) New species of Palaeoxantusia (Reptilia, Sauria) from the Uintan (Eocene) of San Diego Co, California, Journal of Paleontology 54 2, 460-471

Estes R. (1983) Sauria terrestria, Amphisbaenia, Handbuch der Paläoherpetologie 10A, 1-249

Sullivan R. M. (1991) Paleocene Caudata and Squamata from Gidley and Silberling quarries, Montana, Journal of Vertebrate Paleontology 11 3, 293-301

Smith K. T. (2006) A diverse new assemblage of late Eocene squamates (Reptilia) from the Chadron Formation of North Dakota, U.S.A., Palaeontologia Electronica 9 2, 1-44

Am. Mus. Novit. No. 1774 - via The Interim Register of Marine and Nonmarine Genera

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

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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