Boneset Map Lichen vs Polar bear

Rhizocarpon eupetraeum compared with Ursus maritimus

Key Differences

Boneset Map Lichen is Extinct while Polar bear is Vulnerable.

Taxonomic Classification

Rank	Boneset Map Lichen	Polar bear
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (Mammals)
Order	Rhizocarpales (Rhizocarpales)	Carnivora (Carnivorans)
Family	Rhizocarpaceae	Ursidae (Bears)
Genus	Rhizocarpon	Ursus (Bears)
Species	Rhizocarpon eupetraeum	Ursus maritimus

Conservation Status

Boneset Map Lichen

EX — Extinct

Polar bear

VU — Vulnerable

Population: ~26.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Boneset Map Lichen	Polar bear
Diet	—	Carnivore
Average Lifespan	—	25 years
Average Length	—	2.4 m
Average Weight	—	450.0 kg

Habitat & Geographic Range

Boneset Map Lichen

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Sweden, and United States.

Polar bear

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.

Boneset Map Lichen

The Boneset Map Lichen (Rhizocarpon eupetraeum) is a species in the genus Rhizocarpon. It is currently classified as Extinct on the IUCN Red List. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Polar bear

The largest land carnivore on Earth, polar bears can exceed 700 kg and are found across Arctic sea ice from Canada to Russia. Highly specialized marine mammals that rely on sea ice to hunt ringed and bearded seals. Excellent swimmers capable of covering vast distances in open water. Listed as Vulnerable, with populations under severe pressure from rapid Arctic sea ice loss due to climate change.