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Anniealexandria gansi

Description

Anniealexandria is an extinct genus of amphisbaenian lizard known by the type species Anniealexandria gansi from the earliest Eocene of Wyoming. Anniealexandria is the only known member of the family Bipedidae in the fossil record, which otherwise only includes the extant genus Bipes from Mexico. It was named in 2009 in honor of Annie Montague Alexander, founder of the University of California Museum of Paleontology. Remains of Anniealexandria are known only from a single fossil locality in the Bighorn Basin called Castle Gardens, but within the locality its fossils are common in the Willwood Formation, usually consisting of isolated jaw bones and vertebrae. Anniealexandria seems to have been a common component of a paleofauna that included fifteen other lizard species and existed in western North America during a period of global warming in the latest Paleocene and earliest Eocene.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)9581895https://www.gbif.org/species/9581895
PaleoBioDB ID (PBDB)346460https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=346460
Rankspecies
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Squamata : Bipedidae : Anniealexandria : Anniealexandria gansi
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Squamata : Bipedidae : Anniealexandria : Anniealexandria gansi
Taxonomic Status (GBIF)accepted
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-TriploblasticaLankester 1877
-NephrozoaJondelius et al. 2002
-DeuterostomiaGrobben 1908
phylumChordataHaeckel 1847
subphylumVertebrataLamarck 1801
superclassGnathostomataGegenbauer 1874
-Osteichthyes
-SarcopterygiiRomer 1955
subclassDipnotetrapodomorpha
subclassTetrapodomorpha
-Tetrapoda
-ReptiliomorphaSäve-Söderbergh 1934
-AnthracosauriaSäve-Söderbergh 1934
-Batrachosauria
-Cotylosauria
-AmniotaHaeckel 1866
-SauropsidaHuxley 1864
classReptiliaLaurenti 1768
subclassEureptilia
-RomeriidaGauthier et al. 1988
-Diapsida
-Eosuchia
-NeodiapsidaBenton 1985
-SauriaGauthier 1984
-Lepidosauromorpha
superorderLepidosauria
orderSquamataOppel 1811
infraorderAmphisbaeniaGray 1844
-AmphisbaeniformesLongrich et al. 2015
familyBipedidaeTaylor 1951
genusAnniealexandriaSmith 2009
speciesAnniealexandria gansiSmith 2009
Generic NameAnniealexandria
Scientific NameAnniealexandria gansi Smith, 2009
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Anniealexandria gansispeciesbelongs to Anniealexandriastated with evidenceSmith, 2009
Status (PBDB)extinct
Taxon Size (PBDB)1
First Recorded Appearance55.8 - 50.3 Ma
Eocene
Last Recorded Appearance55.8 - 50.3 Ma
Eocene
Environmentterrestrial (based on Amphisbaenia)
Motilityactively mobile (based on Osteichthyes)
Dietinsectivore (based on Amphisbaenia)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)K. T. Smith. 2009. A new lizard assemblage from the earliest Eocene (zone Wa0) of the Bighorn Basin, Wyoming, USA: biogeography during the warmest interval of the Cenozoic. Journal of Systematic Palaeontology 7(3):299-358
Wikipediahttps://en.wikipedia.org/wiki/Anniealexandria_gansi

Fossil Distribution

Synonymy List

YearName and Author
2009Anniealexandria gansi Smith p. 313 figs. 10A-H

References

Smith K. T. (2009) A new lizard assemblage from the earliest Eocene (zone Wa0) of the Bighorn Basin, Wyoming, USA: biogeography during the warmest interval of the Cenozoic, Journal of Systematic Palaeontology 7 3, 299-358
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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