Circular Ear Shell vs Complex-toothed Flying Squirrel

Haliotis cyclobates compared with Trogopterus xanthipes

Key Differences

• Circular Ear Shell is Least Concern while Complex-toothed Flying Squirrel is Near Threatened.

Taxonomic Classification

Rank	Circular Ear Shell	Complex-toothed Flying Squirrel
Kingdom same	Animalia (동물)	Animalia (동물)
Phylum	Mollusca (연체동물)	Chordata (척삭동물)
Class	Gastropoda (복족강)	Mammalia (포유류)
Order	Lepetellida (Lepetellida)	Rodentia (설치류)
Family	Haliotidae	Sciuridae (Squirrels)
Genus	Haliotis	Trogopterus
Species	Haliotis cyclobates	Trogopterus xanthipes

Evolutionary Relationship

Circular Ear Shell and Complex-toothed Flying Squirrel share a common ancestor at the Kingdom level: Animalia. (동물)

Conservation Status

Circular Ear Shell

LC — Least Concern

Complex-toothed Flying Squirrel

NT — Near Threatened

Physical Characteristics

Attribute	Circular Ear Shell	Complex-toothed Flying Squirrel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Circular Ear Shell

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Complex-toothed Flying Squirrel

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Circular Ear Shell

The Circular Ear Shell (Haliotis cyclobates) is a species in the genus Haliotis. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.