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Palaeagama

From Wikipedia, the free encyclopedia
Extinct genus of reptiles

Palaeagama
Life Restoration
Scientific classificationEdit this classification
Kingdom:Animalia
Phylum:Chordata
Class:Reptilia
Clade:Neodiapsida
Genus:Palaeagama
Broom, 1926
Type species
Palaeagama vielhaueri
Broom, 1926

Palaeagama is anextinctgenus ofneodiapsid reptile from theLate Permian orEarly Triassic ofSouth Africa.[1] It is based on an articulated skeleton which was probably found in the Early TriassicLystrosaurus Assemblage Zone, or potentially the Late PermianDaptocephalus Assemblage Zone.[2] Despite the completeness of the specimen,Palaeagama is considered as a "wildcard" taxon of uncertain affinities due to poor preservation.[3] It was originally considered an "eosuchian" (ancestral to modern reptiles),[4] and later reinterpreted as a lizard ancestor closely related toPaliguana andSaurosternon.[2] Modern studies generally consider it an indeterminate neodiapsid,[1][3] though a fewphylogenetic analyses tentatively support a position at the base ofLepidosauromorpha.[5][6]

References

[edit]
  1. ^abFord, David P.; Evans, Susan E.; Choiniere, Jonah N.; Fernandez, Vincent; Benson, Roger B. J. (2021-08-25)."A reassessment of the enigmatic diapsidPaliguana whitei and the early history of Lepidosauromorpha".Proceedings of the Royal Society B: Biological Sciences.288 (1957) 20211084.doi:10.1098/rspb.2021.1084.PMC 8385343.PMID 34428965.
  2. ^abCarroll, Robert L. (1975). "Permo-Triassic 'lizards' from the Karroo".Palaeontologia Africana.18:71–87.
  3. ^abEzcurra, Martín D.; Scheyer, Torsten M.; Butler, Richard J. (2014-02-27)."The Origin and Early Evolution of Sauria: Reassessing the Permian Saurian Fossil Record and the Timing of the Crocodile-Lizard Divergence".PLOS ONE.9 (2) e89165.Bibcode:2014PLoSO...989165E.doi:10.1371/journal.pone.0089165.ISSN 1932-6203.PMC 3937355.PMID 24586565.
  4. ^Broom, R. (1926)."On a nearly complete Skeleton of a new Eosuchian Reptile (Palæagama veilhaueri, gen. et sp. nov.)".Proceedings of the Zoological Society of London.96 (2):487–491.doi:10.1111/j.1469-7998.1926.tb08109.x.ISSN 0370-2774.
  5. ^Simões, Tiago R.; Caldwell, Michael W.; Tałanda, Mateusz; Bernardi, Massimo; Palci, Alessandro; Vernygora, Oksana; Bernardini, Federico; Mancini, Lucia; Nydam, Randall L. (2018)."The origin of squamates revealed by a Middle Triassic lizard from the Italian Alps".Nature.557 (7707):706–709.Bibcode:2018Natur.557..706S.doi:10.1038/s41586-018-0093-3.ISSN 1476-4687.PMID 29849156.S2CID 44108416.
  6. ^Sobral, Gabriela; Simões, Tiago R.; Schoch, Rainer R. (2020-02-20)."A tiny new Middle Triassic stem-lepidosauromorph from Germany: implications for the early evolution of lepidosauromorphs and the Vellberg fauna".Scientific Reports.10 (1): 2273.Bibcode:2020NatSR..10.2273S.doi:10.1038/s41598-020-58883-x.ISSN 2045-2322.PMC 7033234.PMID 32080209.
Sauropsida(Reptiliasensu lato)
Tetrapodomorpha
Reptiliomorpha
Sauropsida
    • see below↓
Acleistorhinidae
Bolosauridae
Mesosauria
Millerettidae?
Procolophonia
Diapsida
    • see below↓
Mesosaurus tenuidensMilleretta rubidgei
Tangasauridae
Weigeltisauridae
Drepanosauromorpha
Kuehneosauridae
Choristodera
Ichthyosauromorpha
Sauropterygia
Thalattosauria
Sauria
(Crown-Reptilia)
Lepidosauromorpha
Archelosauria
Archosauromorpha
Pantestudines
Hovasaurus boulei

Weigeltisaurus jaekeli

Megalancosaurus preonensis
See also
Possible sauropsids
Other taxa
Sauropsida
Lepidosauromorpha
    • see below↓
Sauropterygia?
Lepidosauria
Rhynchocephalia
Pan-Squamata
Parviraptoridae?
(placement uncertain)
Crown-Squamata
Palaeagama


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