Mat Paléontol Suisse. Nat. Is lived during the ____ period. The seaway was warm, shallow, and teeming with all kinds of aquatic life: the perfect habitat for an omnivorous sea turtle. Thus, flippers and other sorts of evolutionary advantages didn’t result until that time. (Spotilla, 2004) During the Mesozoic Era turtles went back and forth between land and sea many times, and it wasn’t until about 120 million years ago during the Cretaceous period that modern sea turtles evolved. Remains of a large sea turtle, Terlinguachelys fischbecki n. gen. and sp., were recovered from paralic deposits of the Upper Cretaceous (Campanian) Aguja Formation in Big Bend National Park, Texas. Pictured above is a female green sea turtle who has left the sea in order to lay her eggs.. A sea turtle is a marine reptile (i.e. Archelon Cretaceous _____ is extinct giant sea turtle. Review of Mesozoic and Cenozoic Sea Turtles from the Former USSR. The animal shown in the image is Archelon which was a Mesozoic sea turtle, I think the text is referring to Carbonemys cofrinii, which was a turtle discovered at the same site and live alongside Titanoboa during the early Paleocene. Protostega lived in the Western Interior Seaway, an inland sea that stretched across much of North America during the Cretaceous Period (the third and final period of the Mesozoic Era). Of the four families that survived the mass extinction at the end of Mesozoic period (the loss of the dinosaurs), two families remain today. nov. is a new giant chelonioid from the Late Maastrichtian (67 Myr) of Morocco exhibiting remarkable adaptations to marine life (among others, very dorsally and posteriorly located nostrils). The seven living species of sea turtles are: flatback sea turtle, green sea turtle, hawksbill sea turtle, Kemp's ridley sea turtle, leatherback sea turtle, loggerhead sea turtle and olive ridley sea turtle. These two lineages were already established in the Cretaceous (Kear and Lee 2006).

REVIEW OF MESOZOIC AND CENOZOIC SEA TURTLES FROM THE FORMER USSR Alexander O. Averianov1 Submitted December 17, 2001. Arkhangelskii M. S. (1999), «On the findings of turtle remains in the Upper Cretaceous of … The Mosasaurs. Author’s Abstract of Candidate’s Thesis, Saratov [in Russian]. a reptile that lives in the sea). Below is a brief outline of the 4 main groups and their adaptations they evolved during the Mesozoic (Triassic 252MA to the end of the Cretaceous 66MA) also commonly referred to as ‘the age of reptiles’. [PMC free article] Pictet FJ, Humbert A. Sea turtles, along with other turtles and tortoises, are part of the order Testudines. A list of 51 localities of fossil sea … The leatherback sea turtle we know today was actually part of the family Protostegidae until about 100 million years ago when a speciation like event occurred (Alfaro, Alonzo, Marianne Køie, and Kurt Buchmann). A.G. Smith, D.G. For four localities in Tajikistan, Kazakhstan, and Ukraine presence of sea turtles is not confirmed by current data. Sea turtles appear later in the Mesozoic Era about _____ million years ago. A list of 51 localities of fossil sea turtles from the Middle Jurassic, Early and Late Cretaceous, Paleocene, Eocene and Miocene of Russia, Uzbekistan, Kazakhstan, Tajikistan, and Ukraine is provided. It has a shell, and four limbs, which long ago evolved into flippers.A sea turtle swims by … 2006; 2:116–119. A primitive protostegid from Australia and early sea turtle evolution. Sea turtles are modern marine reptiles. Google Scholar.