American black bear vs limestone fern

Ursus americanus compared with Gymnocarpium robertianum

Key Differences

• American black bear is Least Concern while limestone fern is Critically Endangered.

Taxonomic Classification

Rank	American black bear	limestone fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Tracheophyta
Class	Mammalia (Mammals)	Polypodiopsida (Polypodiopsida)
Order	Carnivora (Carnivorans)	Polypodiales (Polypodiales)
Family	Ursidae (Bears)	Cystopteridaceae
Genus	Ursus (Bears)	Gymnocarpium
Species	Ursus americanus	Gymnocarpium robertianum

Conservation Status

American black bear

LC — Least Concern

limestone fern

CR — Critically Endangered

Physical Characteristics

Attribute	American black bear	limestone fern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

American black bear

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in United States.

limestone fern

Habitat

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

Range

Distributed across Belgium, Canada, Norway, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

American black bear

The American black bear (Ursus americanus) is a species in the genus Ursus. It is currently classified as Least Concern on the IUCN Red List. Typically found in diverse terrestrial and aquatic ecosystems.