Moschowhaitsia

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Moschowhaitsia
Temporal range: Changhsingian
↓
Life restoration
of Megawhaitsia vjuschkovi
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Synapsida
Clade:
Therapsida
Clade: †Therocephalia
Family: †Whaitsiidae
Genus: †Moschowhaitsia
Tatarinov, 1963
Type species
†Moschowhaitsia vjuschkovi
Tatarinov, 1963
Other species
  • †M. lidaqingi Liu & Abdala, 2023

Moschowhaitsia is an extinct genus of

junior synonym of Theriognathus), due to the structure of its palate combining physical features of both these genera.[3]

Classification and taxonomy

Moschowhaitsia is a member of the derived therocephalian

monotypic subfamily of whaitsiids, Moschowhaitsiinae, on the basis that it appeared to him as an intermediate form bridging the anatomy of two other subfamilies of whaitsiids, Whaitsiinae and Moschorhininae.[3] Some later researchers, including Tatarinov himself, would later elevate Moschowhaitsia to family level distinction (Moschowhaitsiidae), along with other subtaxa of whaitsiids, although nonetheless retaining the existing close taxonomic relationships under the superfamily Whaitsioidea.[4][5]

However, later research of therocephalian evolution using

senior synonym of Whaitsia). As such, Moschowhaitsia is a member of Whaitsiidae as cladistically defined, and is one of the clade's only representatives from Laurasia.[6]

A cladogram depicting the relationships of both M. vjuschkovi and M. lidaqingi is shown below, reproduced from Liu & Abdala (2023) and simplified to show the relationships of whaitsioid therocephalians:[2]

Eutherocephalia

The strict-consensus tree shown above did not recover M. vjuschkovi and M. lidaqingi as each other's sister taxa (found as such in only six of the 30 most parsimonious (i.e. shortest) trees). However, Liu and Abadala (2023) nonetheless assigned M. lidaqingi to Moschognathus as both species show more similarities to each other in morphology than either does to other whaitsiids. Such traits include the number of incisors and postcanine teeth, rugose bone on the front edge of the orbit, and a notch in the maxilla in front of the canine.[2]

See also

References

  1. doi:10.1111/let.12156
    .
  2. ^
    hdl:10539/35706
    .
  3. ^ a b Tatarinov, L. P. (1963). "A new Late Permian therocephalian". Paleontological Journal. 4: 76–94.
  4. doi:10.1111/j.1096-3642.2009.00538.x
    .
  5. S2CID 87382966
    .
  6. PMID 29018609
    .
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