koala vs Rusty Crust

Phascolarctos cinereus compared with Skeletocutis amorpha

Key Differences

• koala is Vulnerable while Rusty Crust is Least Concern.

Taxonomic Classification

Rank	koala	Rusty Crust
Kingdom	Animalia (животные)	Fungi (грибы)
Phylum	Chordata (хордовые)	Basidiomycota (базидиомицеты)
Class	Mammalia (млекопитающие)	Agaricomycetes (агарикомицеты)
Order	Diprotodontia (двурезцовые сумчатые)	Polyporales (полипоровые)
Family	Phascolarctidae (Koalas)	Incrustoporiaceae
Genus	Phascolarctos (Koalas)	Skeletocutis
Species	Phascolarctos cinereus	Skeletocutis amorpha

Conservation Status

koala

VU — Vulnerable

Population: ~100.0K

Trend: Decreasing ↓

Rusty Crust

LC — Least Concern

Physical Characteristics

Attribute	koala	Rusty Crust
Diet	Herbivore	—
Average Lifespan	15 years	—
Average Length	75 cm	—
Average Weight	10.0 kg	—

Habitat & Geographic Range

koala

Habitat

Typically found in grasslands, forests, and vegetated habitats.

Range

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

Rusty Crust

Habitat

Typically found in forest floors, decomposing wood, and soil ecosystems.

Range

Distributed across Belgium, Denmark, Norway, and Sweden.

koala

Iconic marsupial of eastern and southeastern Australia, koalas weigh up to 15 kg and spend up to 22 hours daily sleeping to conserve energy from their low-calorie eucalyptus leaf diet. Highly specialized to process toxic eucalyptus compounds that would kill most other mammals, they have gut microbiomes uniquely adapted for detoxification. Listed as Endangered in 2022, with populations decimated by chlamydia disease, habitat clearing, and climate change.