Bystrowiana
Extinct genus of tetrapodomorphs
From Wikipedia, the free encyclopedia
Bystrowiana is an extinct genus of bystrowianid chroniosuchian from upper Permian deposits of Vladimir Region, Russia[1] and Jiyuan, China.[2] Chroniosuchians are often thought to be reptiliomorphs,[3] but some recent phylogenetic analyses suggest instead that they are stem-tetrapods.[4] The genus is named in honour of the Russian paleontologist Alexey Bystrow. It was first described by Vyushkov in 1957 and the type species is Bystrowiana permira.[1] Two species—B. permira and B. sinica—are known.[5]
| Bystrowiana Temporal range: Lopingian to Early Triassic | |
|---|---|
| |
| Bystrowiana permira | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Reptiliomorpha (?) |
| Order: | †Chroniosuchia |
| Family: | †Bystrowianidae |
| Genus: | †Bystrowiana Vyushkov, 1957 |
| Species | |
Bystrowiana is known from a 30 cm skull, which suggests it was a large animal, up to 2.5 m (8.2 ft) in total body length.[6]
Phylogeny
Bystrowiana in a cladogram after Novikov (2018) showing internal relationships of bystrowianids based on differences in their osteoderms:[7]
| Bystrowianidae |
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