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Nectosaurus

Description

Nectosaurus is a genus of marine diapsid reptile which lived during the Late Triassic of what is now California. The type species is N. halius, was found in the Hosselkus Limestone and described by John C. Merriam in 1905, making it one of the first thalattosaurians known (along with Thalattosaurus). A 2002 analysis of Nectosaurus classifies it as a thalattosaurian, one of a group of marine reptiles which lived during the Triassic.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4823476https://www.gbif.org/species/4823476
PaleoBioDB ID (PBDB)36425https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=36425
Rankgenus
Taxonomy (GBIF)Life : Animalia : Chordata : Reptilia : Thalattosauridae : Nectosaurus
Taxonomy (PBDB)Life : Animalia : Chordata : Reptilia : Thalattosauria : Nectosaurus
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
-ThalattosauriformesNicholls 1999
orderThalattosauriaMerriam 1905
superfamilyThalattosauroideaNopcsa 1928
genusNectosaurusMerriam 1905
Scientific NameNectosaurus Merriam, 1905
Name Published InMem. California Acad. Sci., 5, no. 1
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Nectosaurusgenusbelongs to Thalattosauridaestated with evidenceMerriam, 1905
Nectosaurusgenusbelongs to Thalattosauriastated without evidenceMerriam, 1906
Nectosaurusgenusbelongs to Thalattosauroideastated with evidenceNicholls, 1999
Nectosaurusgenusbelongs to Thalattosauriasecond handSepkoski, 2002
Nectosaurusgenusbelongs to Thalattosauridaestated with evidenceMüller, 2007
Nectosaurusgenusbelongs to Thalattosauroideastated with evidenceWu et al., 2009
Status (PBDB)extinct
Taxon Size (PBDB)2
First Recorded Appearance237 - 228 Ma
Late/Upper Triassic
Last Recorded Appearance232 - 222 Ma
Late/Upper Triassic
Environmentmarine (based on Thalattosauria)
Motilityactively mobile (based on Osteichthyes)
Taphonomyphosphatic (based on Vertebrata)
Primary Reference (PBDB)J. C. Merriam. 1905. The Thalattosauria. Memoirs of the California Academy of Sciences 5:1-53
Wikipediahttps://en.wikipedia.org/wiki/Nectosaurus

Fossil Distribution

Subtaxa

NameStatusCommon Name(s)Fossil OccurrencesOldestYoungest
Nectosaurus halius
species
accepted (GBIF)
listed (PBDB)
3237 Ma
Middle Triassic
232 Ma
Late/Upper Triassic

Synonymy List

YearName and Author
1905Nectosaurus Merriam pp. 37-38 figs. plate 4, figs 4a-5; plate 5, figs 4,6; plate 7, fig. 5
1906Nectosaurus Merriam p. 217
1999Nectosaurus Nicholls p. 15
2002Nectosaurus Sepkoski, Jr.
2007Nectosaurus Müller p. 239 fig. 2
2009Nectosaurus Wu et al. p. 17 fig. 8

References

Merriam J. C. (1905) The Thalattosauria, Memoirs of the California Academy of Sciences 5, 1-53
Merriam J. C. (1906) Notes on the osteology of the thalattosaurian genus Nectosaurus, University of California Publications, Bulletin of the Department of Geology 5 13, 217-223
Nicholls E. L. (1999) A reexamination of Thalattosaurus and Nectosaurus and the relationships of the Thalattosauria (Reptilia: Diapsida), PaleoBios 19 1, 1-29
Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
Müller J. (2007) First record of a thalattosaur from the Upper Triassic of Austria, Journal of Vertebrate Paleontology 27 1, 236-240
Wu X. -C., Cheng Y. -N., et al (2009) Miodentosaurus brevis Cheng et al. 2007 (Diapsida: Thalattosauria): its postcranial skeleton and phylogenetic relationships, Vertebrata PalAsiatica 47, 1-20
Mem. California Acad. Sci., 5, no. 1 - 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
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
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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