Eaton's shield fern vs Green Sea Turtle

Polystichum scopulinum compared with Chelonia mydas

Key Differences

• Eaton's shield fern is Extinct while Green Sea Turtle is Endangered.

Taxonomic Classification

Rank	Eaton's shield fern	Green Sea Turtle
Kingdom	Plantae (植物)	Animalia (動物)
Phylum	Tracheophyta	Chordata (脊索動物)
Class	Polypodiopsida (ウラボシ綱)	Reptilia (爬虫類)
Order	Polypodiales (ウラボシ目)	Testudines (カメ)
Family	Dryopteridaceae	Cheloniidae (Sea Turtles)
Genus	Polystichum	Chelonia (Green Sea Turtles)
Species	Polystichum scopulinum	Chelonia mydas

Conservation Status

Eaton's shield fern

EX — Extinct

Green Sea Turtle

EN — Endangered

Population: ~85.0K

Trend: Decreasing ↓

Physical Characteristics

Attribute	Eaton's shield fern	Green Sea Turtle
Diet	—	Herbivore
Average Lifespan	—	80 years
Average Length	—	1.2 m
Average Weight	—	200.0 kg

Habitat & Geographic Range

Eaton's shield fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Found in Canada.

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.

Green Sea Turtle

アオウミガメは最も大きなウミガメの一つです。甲羅ではなく軟骨と脂肪の緑色に由来して名付けられました。