The Evolution of Sea Turtles

[mothcorrupteth]

Summary

• Long mired in confusion, we are more confident now that turtles in general evolved from a mosaic of "stem turtle" species that seem closely related to lepidosaurs.
• There two main types of turtles: Cryptodira and Pleurodira. Sea turtles belong to the much more numerous Cryptodira, which retract their heads between the shoulder girdle.
  
• The earliest known marine turtle (Desmatochelys) comes from the Early Cretaceous, from about 120 mya.
  
• There appear to be at least two groups of marine turtles that convergently evolved in two separate lineages.
  
• Conservation is important.

I highly recommend subscribing to this channel (Ben G Thomas).

 

[prodromos]

Evolution?
Nah.

So God created the great sea monsters and every living creature that moves, with which the waters swarm, according to their kinds, and every winged bird according to its kind. And God saw that it was good.​

 

[joshua 1 9]

There have been 6 extinctions and every time 10% of the population survived. In this case the turtles and crocodiles survived when the dinosaurs went extinct. So they have been around a long time.

 

[Job 33:6]

Summary

• Long mired in confusion, we are more confident now that turtles in general evolved from a mosaic of "stem turtle" species that seem closely related to lepidosaurs.
• There two main types of turtles: Cryptodira and Pleurodira. Sea turtles belong to the much more numerous Cryptodira, which retract their heads between the shoulder girdle.
  
• The earliest known marine turtle (Desmatochelys) comes from the Early Cretaceous, from about 120 mya.
  
• There appear to be at least two groups of marine turtles that convergently evolved in two separate lineages.
  
• Conservation is important.

I highly recommend subscribing to this channel (Ben G Thomas).

Great video! Very informative.