Protostega ('first roof')[1] is an extinct genus of sea turtle containing a single species, Protostega gigas. Its fossil remains have been found in the Smoky Hill Chalk formation of western Kansas (Hesperornis zone, dated to 83.5 million years ago[2]) and time-equivalent beds of the Mooreville Chalk Formation of Alabama.[3] Fossil specimens of this species were first collected in 1871, and named by Edward Drinker Cope in 1872.[4] With a length of 3 metres (9.8 ft), it is the second-largest sea turtle that ever lived, second only to the giant Archelon,[5] and the third-largest turtle of all time behind Archelon and Stupendemys.[6]
Protostega has been suggested to play 15 roles. Click below to see other actors suggested for each role, and vote for who you think would play the role best.
