Brown cat shark vs Collembola

Apristurus brunneus compared with Folsomides angularis

Key Differences

• Brown cat shark is Data Deficient while Collembola is Not Evaluated.

Taxonomic Classification

Rank	Brown cat shark	Collembola
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Chondrichthyes (Cartilaginous Fish)	Collembola (springtail)
Order	Carcharhiniformes (Ground Sharks)	Entomobryomorpha (Entomobryomorpha)
Family	Scyliorhinidae	Isotomidae
Genus	Apristurus	Folsomides
Species	Apristurus brunneus	Folsomides angularis

Evolutionary Relationship

Brown cat shark and Collembola share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brown cat shark

DD — Data Deficient

Collembola

NE — Not Evaluated

Physical Characteristics

Attribute	Brown cat shark	Collembola
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brown cat shark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Range

Found in Chile.

Collembola

Habitat

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

Range

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

Brown cat shark

The Brown Cat Shark (Apristurus brunneus) is a species in the genus Apristurus. It is currently classified as Data Deficient on the IUCN Red List. Typically found in marine environments from coastal waters to deep ocean.

Collembola

<em>Folsomides angularis</em>, commonly referred to as Collembola in reference to its broader taxonomic order, is a springtail species belonging to the genus <em>Folsomides</em>. Springtails are among the most abundant hexapods in terrestrial ecosystems, playing important roles in soil decomposition and nutrient cycling. This species has been documented in Europe, with records from Denmark, Norway, and Sweden, as well as North America, where it is known from the United States. It typically inhabits soil, leaf litter, and decaying organic matter, and is capable of tolerating a range of environmental conditions. Springtails of this group are detritivores, feeding on decomposing plant material, fungal hyphae, and microorganisms, though specific dietary data for <em>Folsomides angularis</em> are not detailed in current records. The species has not been formally assessed for conservation status. Biological traits of this species remain poorly documented in the scientific literature. Its small body size and cryptic lifestyle make detailed ecological study challenging.