Common hammerhead vs Orinoco Four-eyed Opossum

Sphyrna zygaena compared with Philander deltae

Key Differences

• Common hammerhead is Not Evaluated while Orinoco Four-eyed Opossum is Least Concern.

Taxonomic Classification

Rank	Common hammerhead	Orinoco Four-eyed Opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Carcharhiniformes (Ground Sharks)	Didelphimorphia (Didelphimorphia)
Family	Sphyrnidae (Hammerhead Sharks)	Didelphidae
Genus	Sphyrna (Hammerhead Sharks)	Philander
Species	Sphyrna zygaena	Philander deltae

Evolutionary Relationship

Common hammerhead and Orinoco Four-eyed Opossum share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Common hammerhead

NE — Not Evaluated

Orinoco Four-eyed Opossum

LC — Least Concern

Physical Characteristics

Attribute	Common hammerhead	Orinoco Four-eyed Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common hammerhead

Habitat

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

Range

Distributed across Chile, Denmark, Portugal, Sweden, and Taiwan.

Orinoco Four-eyed Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.

Common hammerhead

The common hammerhead, <em>Sphyrna zygaena</em>, is a cartilaginous fish belonging to the order Carcharhiniformes, family Sphyrnidae. This species is typically found in marine environments and has a distribution that includes the waters of Chile, Denmark, Portugal, Sweden, and Taiwan, reflecting a wide range across both Atlantic and Pacific Ocean systems. As a hammerhead shark, <em>Sphyrna zygaena</em> possesses the characteristic cephalofoil, the laterally expanded head structure that provides enhanced sensory capabilities and hydrodynamic benefits. Hammerhead sharks are generally known to be active, wide-ranging predators within marine ecosystems. No dietary information has been provided for this specific species in current records. Biological traits of this species remain poorly documented in the scientific literature.