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Plotosaurus

Description

Plotosaurus ("swimmer lizard") is an extinct genus of mosasaur from the Upper Cretaceous (Maastrichtian) of Fresno County, California. Originally named Kolposaurus (meaning "bay lizard") by Berkeley paleontologist Charles Lewis Camp in 1942, it was changed to Plotosaurus in 1951 when Camp discovered the name had already been assigned to a type of nothosaur.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4819790https://www.gbif.org/species/4819790
PaleoBioDB ID (PBDB)36409https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=36409
Rankgenus
Taxonomy (GBIF,PBDB)Life : Animalia : Chordata : Reptilia : Squamata : Mosasauridae : Plotosaurus
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
-EpisquamataPyron et al. 2013
-ToxicoferaVidal and Hedges 2005
superfamilyMosasauria
familyMosasauridaeGervais 1852
subfamilyMosasaurinaeGervais 1853
tribeMosasauriniRussell 1967
genusPlotosaurusCamp 1951
Scientific NamePlotosaurus Camp, 1951
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Plotosaurusgenusbelongs to Mosasauridaestated with evidenceMcDowell and Bogert, 1954
Plotosaurusgenusbelongs to Plotosaurinistated with evidenceRussell, 1967
Plotosaurusgenusbelongs to MosasauridaeimpliedCarroll, 1988
Plotosaurusgenusbelongs to Mosasaurinaestated with evidenceDortangs et al., 2002
Plotosaurusgenusbelongs to Squamatasecond handSepkoski, 2002
Plotosaurusgenusbelongs to Mosasaurinaestated with evidenceBell and Polcyn, 2005
Plotosaurusgenusbelongs to Mosasaurinistated with evidenceLeBlanc et al., 2012
Status (PBDB)extinct
Taxon Size (PBDB)3
First Recorded Appearance72.1 - 66.0 Ma
Late/Upper Cretaceous
Last Recorded Appearance70.6 - 66.0 Ma
Late/Upper Cretaceous
Environmentterrestrial (based on Diapsida)
Motilityactively mobile (based on Osteichthyes)
Visionwell-developed (based on Mosasauridae)
Dietcarnivore (based on Mosasauridae)
Reproductionovoviviparous (based on Mosasauridae)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560
Wikipediahttps://en.wikipedia.org/wiki/Plotosaurus

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Kolposaurus bennisoni
species
accepted (GBIF)
listed (PBDB)
272.1 Ma
Late/Upper Cretaceous
70.6 Ma
Late/Upper Cretaceous
Kolposaurus tuckeri
species
accepted (GBIF)
listed (PBDB)
372.1 Ma
Late/Upper Cretaceous
72.1 Ma
Late/Upper Cretaceous

Obsolete Names

NameSourceTaxon RankTaxonomy
Garzasaurus Anderson, 1943GBIFgenusAnimalia : Chordata : Reptilia : Squamata : Mosasauridae : Garzasaurus

Synonymy List

YearName and Author
1942Kolposaurus Camp p. 2
1943Garzasaurus Anderson p. 186
1951Plotosaurus Camp
1954Plotosaurus McDowell and Bogert p. 132
1967Plotosaurus Russell p. 145
1988Plotosaurus Carroll
YearName and Author
2002Plotosaurus Dortangs et al.
2002Plotosaurus Novas et al.
2002Plotosaurus Sepkoski, Jr.
2005Plotosaurus Bell and Polcyn p. 189
2012Plotosaurus LeBlanc et al.

References

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
Camp C. L. (1942) California mosasaurs, Memoirs of the University of California 13 1, 1-68
McDowell S. B., Bogert C. M. (1954) The systematic postition of Lanthanotus and the affinities of the anguinomorphan lizards, Bulletin of the American Museum of Natural History 105 1, 1-142
Russell D. A. (1967) Systematics and morphology of American mosasaurs (Reptilia, Sauria), Bulletin of the Peabody Museum of Natural History 23, 1-252
Carroll R. L. (1988) , Vertebrate Paleontology and Evolution, 1-698
Dortangs R. W., Schulp A. S., et al (2002) A large new mosasaur from the Upper Cretaceous of the Netherlands, Netherlands Journal of Geosciences/Geologie en Mijnbouw 81 1, 1-8
Novas F. E., Fernández M., et al (2002) Lakumasaurus antarcticus, n. gen. et sp., a new mosasaur (Reptilia, Squamata) from the Upper Cretaceous of Antarctica, Ameghiniana 39 2, 245-249
Bell G. L., Polcyn M. J. (2005) Dallasaurus turneri, a new primitive mosasauroid from the Middle Turonian of Texas and comments on the phylogeny of Mosasauridae (Squamata), Netherlands Journal of Geosciences 84 3, 177-194
LeBlanc A. R. H., Caldwell M. W., et al (2012) A new mosasaurine from the Maastrichtian (Upper Cretaceous) phosphates of Morocco and its implications for mosasaurine systematics, Journal of Vertebrate Paleontology 32 1, 82-104
SN2000: Brands, S. J. (compiler) 1989-2005. Systema Naturae 2000. Amsterdam, The Netherlands (2006 version). Available online at http://sn2000.taxonomy.nl/. - via The Interim Register of Marine and Nonmarine Genera
Sepkoski, J. J., Jr. (2002). A compendium of fossil marine animal genera. Bulletins of American Paleontology. 363, 1-560. - via The Interim Register of Marine and Nonmarine Genera
Lindgren et al., 2007 - 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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