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Nanictidops

From Wikipedia, the free encyclopedia
Extinct genus of therapsids
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(August 2024)

Nanictidops
Temporal range:Late Permian
Holotype skull in (A) dorsal and (B) right lateral views; section of skull (indicated in B) in (C) dorsal and (D) ventral views. Scale bar = 2 cm
Scientific classificationEdit this classification
Kingdom:Animalia
Phylum:Chordata
Clade:Synapsida
Clade:Therapsida
Clade:Therocephalia
Clade:Eutherocephalia
Family:Nanictidopidae
Genus:Nanictidops
Broom,1940
Type species
Nanictidops kitchingi

Nanictidops is an extinct genus oftherocephaliantherapsids from theLate Permian of South Africa'sKaroo Supergroup, containing the single speciesNanictidops kitchingi. Together with the closely relatedRussian genusPurlovia, it is a member of the familyNanictidopidae, although this is contended.[1]

The holotype and only specimen, RC 49, is part of the Rubidge collection inGraaf-Reinet, where it was originally found.[1]

Description

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The skull is short and wide with enormous canines and post-canines.[1] Of teeth, it had 3 canines, 5 incisors and 8 molars.Broom 1947 notes that it resembles the skull ofIctidochampsa.[2]

Therocephalia major consensus tree (Liu and Abdala, 2020)

Taxonomy

[edit]

Although it andPurlovia were considered related and classified as the only two members ofNanictidopidae by Ivakhnenko 2011 because they shared a wide temporal region, Liu and Abdala 2020 found little relation between the two genera and instead classifiesNanictidops as thebasalmost member ofBaurioidea, whilePurlovia forms an exclusivelyLaurasian clade with the Chinese genusCaodeyao instead.[1]

References

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  1. ^abcdLiu, Jun; Abdala, Fernando (2020-05-28)."The tetrapod fauna of the upper Permian Naobaogou Formation of China: 5. Caodeyao liuyufengi gen. et sp. nov., a new peculiar therocephalian".PeerJ.8 e9160.doi:10.7717/peerj.9160.ISSN 2167-8359.PMC 7261480.PMID 32523808.
  2. ^Broom, Robert (January 1947)."XXI.—A Contribution to our Knowledge of the Vertebrates of the Karroo Beds of South Africa".Earth and Environmental Science Transactions of the Royal Society of Edinburgh.61 (2):577–629.doi:10.1017/S0080456800004865.ISSN 2053-5945.
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