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Sapheosaurus

From Wikipedia, the free encyclopedia
Extinct genus of reptiles

Sapheosaurus
Temporal range:Late JurassicKimmeridgian[1]
Sapheosaurus thiollierei
Scientific classificationEdit this classification
Domain:Eukaryota
Kingdom:Animalia
Phylum:Chordata
Class:Reptilia
Order:Rhynchocephalia
Family:Sapheosauridae
Genus:Sapheosaurus
Species
  • S. thiolliereiMeyer, 1850[2]
  • S. laticepsWagner[2]

Sapheosaurus is an extinct genus of Late Jurassicsphenodont. Its skull was longer and narrower than that ofHomoeosaurus.[2] It was classified as agenus ofsapheosaur byMichael Benton in 1985.[3] It reached a length of 70 cm from snout to tail.[4]Sapheosaurus belongs to the cladeSapheosauridae, that also includes other taxa likeKallimodon. It is believed to be one of two aquatic sphenodont lineages, withPleurosauridae being the other.[5][6]

TMH 3954, the holotype ofS. laticeps (=Piocormus laticeps)

Species

[edit]

Sapheosaurus laticeps (also known asPiocormus) differed fromSapheosaurus thiollierei by its smaller size and morevertebrae.S. thiollierei had 22 back and neck vertebrae, whileS. laticeps had 26. Also, the two differ in relative limb length.S. laticeps lived inFrance andGermany.[2]

References

[edit]
  1. ^BOULENGER, G. (1919). Sur le genreSapheosaurus, Rhynchocephalien du Kiméridgien de Cerin.CR Acad. Sci. Paris, 605-607.
  2. ^abcdBritish Museum (Natural History). Dept. of Geology; Lydekker, R. (1888).Catalogue of the Fossil Reptilia and Amphibia in the British Museum (Natural History): The orders Ornithosauria, Crocodilia, Dinosauria, Squamata, Rhynochocephalia, and Proterosauria. order of the Trustees. p. 292. Retrieved2015-03-22.
  3. ^"PBDB Taxon".paleobiodb.org. Retrieved2024-12-08.
  4. ^"GenusSpecies Skull Height Length Weight Stage Ablepharus L". docstoc.com. Retrieved2015-03-22.
  5. ^Jones, Marc E.H. (2008)."Skull Shape and Feeding Strategy in Sphenodon and Other Rhynchocephalia (Diapsida: Lepidosauria".Journal of Morphology.269 (8):945–966.doi:10.1002/jmor.10634.PMID 18512698.
  6. ^Marc E. H. Jones, Skull shape and feeding strategy in Sphenodon and other Rhynchocephalia (Diapsida: Lepidosauria), Article in Journal of Morphology 269(8):945-66 · August 2008 DOI: 10.1002/jmor.10634 · Source: PubMed
Sauropsida
Lepidosauromorpha
Rhynchocephalia
    • see below↓
Gephyrosauridae?
Sphenodon punctatus
Incertae sedis
Clevosauridae
Sapheosauridae
"Eupropalinal
sphenodonts"
Pleurosauridae?
Sphenodontidae
Opisthodontia
Eilenodontinae
Sapheosaurus


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