The Protostegidae are a family of extinct marine turtles that lived during the Cretaceous period. The family includes some of the largest sea turtles that ever existed. The largest, Archelon, had a head a meter long. Like most sea turtles, they had flattened bodies and flippers for front appendages; protostegids had minimal shells like leatherback...
Found on
http://en.wikipedia.org/wiki/Protostegidae
(from the article `turtle`) ...modern turtles found in the fossil record, appearing in the Cretaceous Period. The oldest sea turtle (Santanachelys gaffneyi) is known from the ...
Found on
http://www.britannica.com/eb/a-z/p/124
No exact match found.
