vs Five-toed Pygmy Jerboa

Bacidia rosella compared with Cardiocranius paradoxus

Key Differences

• is Critically Endangered while Five-toed Pygmy Jerboa is Data Deficient.

Taxonomic Classification

Rank		Five-toed Pygmy Jerboa
Kingdom	Fungi (Fungi)	Animalia (Animals)
Phylum	Ascomycota (Sac Fungi)	Chordata (Chordates)
Class	Lecanoromycetes (Lecanoromycetes)	Mammalia (Mammals)
Order	Lecanorales (Lecanorales)	Rodentia (Rodents)
Family	Ramalinaceae	Dipodidae
Genus	Bacidia	Cardiocranius
Species	Bacidia rosella	Cardiocranius paradoxus

Conservation Status

CR — Critically Endangered

Five-toed Pygmy Jerboa

DD — Data Deficient

Physical Characteristics

Attribute		Five-toed Pygmy Jerboa
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.

Five-toed Pygmy Jerboa

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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.