Dusky Slender Opossum vs Speer’s Collared Frog

Marmosops fuscatus compared with Mannophryne speeri

Key Differences

• Dusky Slender Opossum is Data Deficient while Speer’s Collared Frog is Critically Endangered.

Taxonomic Classification

Rank	Dusky Slender Opossum	Speer’s Collared Frog
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Didelphimorphia (Didelphimorphia)	Anura (Frogs & Toads)
Family	Didelphidae	Aromobatidae
Genus	Marmosops	Mannophryne
Species	Marmosops fuscatus	Mannophryne speeri

Evolutionary Relationship

Dusky Slender Opossum and Speer’s Collared Frog share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dusky Slender Opossum

DD — Data Deficient

Speer’s Collared Frog

CR — Critically Endangered

Physical Characteristics

Attribute	Dusky Slender Opossum	Speer’s Collared Frog
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dusky Slender Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

Speer’s Collared Frog

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and flooded grasslands and savannas, among 5 distinct biome types within the Neotropic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

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

Shared Countries

Both species can be found in 1 countries:

🇻🇪 Venezuela