Brook Floater vs Hourglass Dolphin

Alasmidonta varicosa compared with Lagenorhynchus cruciger

Key Differences

• Brook Floater is Vulnerable while Hourglass Dolphin is Least Concern.

Taxonomic Classification

Rank	Brook Floater	Hourglass Dolphin
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Unionida (Unionida)	Cetacea (Whales & Dolphins)
Family	Unionidae	Delphinidae (Oceanic Dolphins)
Genus	Alasmidonta	Lagenorhynchus
Species	Alasmidonta varicosa	Lagenorhynchus cruciger

Evolutionary Relationship

Brook Floater and Hourglass Dolphin share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Brook Floater

VU — Vulnerable

Hourglass Dolphin

LC — Least Concern

Physical Characteristics

Attribute	Brook Floater	Hourglass Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

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

Range

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

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.