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Green Sea Turtle Evolution

Aaron Kwok

Marine Biology

February 2021

260 Million Years Ago

Eunotosaurus africanus

- No shell

- Lizard like

- Primarily on Land

- has teeth

- T-shaped dorsal ribs which served the structure of a shell

260 Million Years Ago

240 Million Years Ago

Odontochelys semutestacea

- possess a complete plastron which evolves into the turtle shell

240 Million Years Ago

60 Million Years Ago

Proganochelys quenstedi

- has the modern turtle shell

- has teeth on the roof of their mouth

60 Million Years Ago

Present

Chelonia mydas (Green Sea Turtle)

- No teeth just a serrated jaw

- has full shell that we know now

- debate if turtles came from dinosaurs or lizards

Present

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