Turtle - origin and evolution: the earliest turtles known date to the late permian epoch (the permian period lasted from 2989 million to about 2519 million years ago) whereas living turtles are toothless, many ancestral forms possessed teeth the oldest sea turtle (santanachelys gaffneyi) is known from the mid-cretaceous it is a member. Sea turtle, saving endangered sea turtles from extinction since 1987 the foundation has worked tirelessly to preserve the environment, educate children, sponsor and fund organizations with the same goals, and raise funds for the care of sick sea turtles. Working with two relatively complete turtle skeletons, the fossils help solve a long-standing debate as to whether this animal was a unique species they also provide insights into the evolutionary history of living species of sea turtles, including the kemp's ridley, loggerhead and the endangered green sea turtle. Additional findings about sea turtles have come to light recently, adding to these remarkable animals’ resumè of design features multi-functional flippers the flippers of sea turtles have to work well in the water as paddles and on sand as legs.
5 the origin of turtles the five-part bbc program, the biology of sea turtles, flippers, the trans-oceanic navigation system and leatherback endothermy, the dermal armour of turtles evolved in evolution anything is possible, even things that seem impossible the question is: what, or who, was responsible for its wonders. Sea turtle evolution sea turtles belong to the order testudines whose first specimens date back to about 220 million years ago, making them one of the most primitive groups of reptiles that still inhabit the earth this order is part of the class reptilia, which also includes animals like snakes, crocodiles, and lizards.
An introduction to sea turtles: evolution and comparison of leatherbacks, loggerheads, greens and hawksbills_final this topic submitted by gina hayes ([email protected]) at 1:45 am on 7/14/05students take a coral quiz, san salvador, bahamas.
Evidence for turtle evolution by jerry bergman and wayne frair the fossil record is rich with many well-preserved turtle shells and a wide variety of turtles ‘dating back’ to before the dinosaurs in the triassic.
Turtle shell evolution broad-ribbed bony structures likely evolved to provide early turtles with more stability and leverage for fossorial locomotion (burrowing) as these structures evolved and the turtle's carapace emerged in later forms, the flexibility of the spine was reduced and crawling speed declined. The leatherback turtle is the largest sea turtle species and one of the largest marine reptilesthey can grow to a maximum length of about 6 feet and weight of about 2,000 pounds.
Another function of the sea turtles’ limbs was recently reported in science daily: “sea turtles use flippers to manipulate food”researchers from the monterey bay aquarium were surprised to watch the turtles swipe at jellyfish, then hold them in their “paws” and “lick their fingers” while feeding.
The results formed a well-supported phylogenetic tree, or cladogram, that tells the story of sea turtle evolution and is reported in the journal molecular phylogenetics and evolution the evolution of a specialized diet appears to have occurred three times, independently, says naro-maciel. Gina hayes tme, june, 2005 an introduction to sea turtles: evolution and comparison of leatherbacks, loggerheads, greens and hawksbills modern sea turtle have only been around for about the last 120 million years, so what was going on before that.