American Brook Lamprey vs Green Sea Turtle

Lethenteron appendix compared with Chelonia mydas

Key Differences

• American Brook Lamprey is Least Concern while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	American Brook Lamprey	Green Sea Turtle
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Petromyzonti (Petromyzonti)	Reptilia (Reptiles)
Order	Petromyzontiformes (lamprey)	Testudines (Turtles & Tortoises)
Family	Petromyzontidae	Cheloniidae (Sea Turtles)
Genus	Lethenteron	Chelonia (Green Sea Turtles)
Species	Lethenteron appendix	Chelonia mydas

Evolutionary Relationship

American Brook Lamprey and Green Sea Turtle share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

American Brook Lamprey

LC — Least Concern

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	American Brook Lamprey	Green Sea Turtle
Diet	—	Herbivore
Average Lifespan	—	80 years
Average Length	—	1.2 m
Average Weight	—	200.0 kg

Habitat & Geographic Range

American Brook Lamprey

Habitat

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

Range

Found in United States.

Green Sea Turtle

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical grasslands and savannas, among 8 distinct biome types. Populations are also found in montane and highland environments at higher elevations.

Range

Distributed across Australia, Brazil, Costa Rica, Indonesia, and Mexico. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

American Brook Lamprey

The American Brook Lamprey (Lethenteron appendix) is a species in the genus Lethenteron. It is currently classified as Least Concern on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.

Green Sea Turtle

The green sea turtle is one of the largest sea turtles. They are named for the green color of their cartilage and fat, not their shells.