vs Narrow-headed Slender Opossum

Bacidia rosella compared with Marmosops cracens

Key Differences

• is Critically Endangered while Narrow-headed Slender Opossum is Data Deficient.

Taxonomic Classification

Rank		Narrow-headed Slender Opossum
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (Mammals)
Order	Lecanorales (Lecanorales)	Didelphimorphia (Didelphimorphia)
Family	Ramalinaceae	Didelphidae
Genus	Bacidia	Marmosops
Species	Bacidia rosella	Marmosops cracens

Conservation Status

CR — Critically Endangered

Narrow-headed Slender Opossum

DD — Data Deficient

Physical Characteristics

Attribute		Narrow-headed Slender Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, temperate coniferous forests, and boreal forests and taiga, among 5 distinct biome types within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

Narrow-headed Slender Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.

Bacidia rosella is a crustose lichen in the family Ramalinaceae, assessed as Critically Endangered (CR). It grows on the smooth bark of ancient trees in old-growth woodland habitats with long ecological continuity. Its critically endangered status reflects extreme rarity and the near-total loss of suitable veteran tree habitats across its range.