Asiatic holly fern vs Oso Polar

Cyrtomium caryotideum compared with Ursus maritimus

Key Differences

Asiatic holly fern is Extinct while Oso Polar is Vulnerable.

Taxonomic Classification

Rank	Asiatic holly fern	Oso Polar
Kingdom	Plantae (planta)	Animalia (Animals)
Phylum	Tracheophyta	Chordata (cordados)
Class	Polypodiopsida (Polypodiopsida)	Mammalia (mamíferos)
Order	Polypodiales (Polypodiales)	Carnivora (carnívoros)
Family	Dryopteridaceae	Ursidae (Bears)
Genus	Cyrtomium	Ursus (Bears)
Species	Cyrtomium caryotideum	Ursus maritimus

Conservation Status

Asiatic holly fern

EX — Extinct

Oso Polar

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Asiatic holly fern	Oso Polar
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Asiatic holly fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Found in Taiwan.

Oso Polar

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 4 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Norway. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Asiatic holly fern

The Asiatic holly fern (Cyrtomium caryotideum) is a species in the genus Cyrtomium. It is currently classified as Extinct on the IUCN Red List. Typically found in moist, shaded forest floors and tropical canopies. Found in Taiwan.

Oso Polar

El mayor carnivoro terrestre de la Tierra, el oso polar puede superar los 700 kg y se encuentra en el hielo marino del Artico, desde Canada hasta Rusia. Es un mamifero marino altamente especializado que depende del hielo marino para cazar focas anilladas y barbadas. Excelente nadador capaz de cubrir grandes distancias en agua abierta. Clasificado como Vulnerable, sus poblaciones soportan una presion severa por la rapida perdida de hielo marino artico debida al cambio climatico.