Complex-toothed Flying Squirrel vs Dusky catshark

Trogopterus xanthipes compared with Bythaelurus incanus

Key Differences

• Complex-toothed Flying Squirrel is Near Threatened while Dusky catshark is Data Deficient.

Taxonomic Classification

Rank	Complex-toothed Flying Squirrel	Dusky catshark
Kingdom same	Animalia (животные)	Animalia (животные)
Phylum same	Chordata (хордовые)	Chordata (хордовые)
Class	Mammalia (млекопитающие)	Chondrichthyes (хрящевые рыбы)
Order	Rodentia (грызуны)	Carcharhiniformes (кархаринообразные)
Family	Sciuridae (Squirrels)	Scyliorhinidae
Genus	Trogopterus	Bythaelurus
Species	Trogopterus xanthipes	Bythaelurus incanus

Evolutionary Relationship

Complex-toothed Flying Squirrel and Dusky catshark share a common ancestor at the Phylum level: Chordata. (хордовые)

Conservation Status

Complex-toothed Flying Squirrel

NT — Near Threatened

Dusky catshark

DD — Data Deficient

Physical Characteristics

Attribute	Complex-toothed Flying Squirrel	Dusky catshark
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Complex-toothed Flying Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Dusky catshark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Complex-toothed Flying Squirrel

<em>Trogopterus xanthipes</em>, the complex-toothed flying squirrel, is a medium-sized gliding rodent in the family Pteromyidae endemic to China, where it inhabits montane broadleaf and mixed forests at elevations typically between 1,000 and 2,700 metres in provinces including Sichuan, Yunnan, Guizhou, Hubei, and neighbouring regions. This species is the sole member of the genus Trogopterus and is distinguished by complex tooth morphology compared to other flying squirrels. Like all flying squirrels, it possesses a patagium — a gliding membrane stretching between fore and hind limbs — that enables it to glide between trees rather than undertake powered flight. The complex-toothed flying squirrel is nocturnal and arboreal, spending its days sheltering in tree hollows and foraging at night for leaves, bark, seeds, and fungi. Its faeces, known as Wuflingzhi, have been used in traditional Chinese medicine for centuries, leading to trapping pressure in parts of its range. The IUCN classifies this species as Near Threatened, reflecting population decline driven by overhunting for medicinal use and ongoing habitat loss from logging and agricultural encroachment in montane forests. Biological traits including average body mass, lifespan, litter size, and home range are partially documented but detailed population estimates are limited. Conservation measures include legal protections under Chinese wildlife law.