New Sea Turtle from the Miocene of Peru and the Iterative Evolution of Feeding Ecomorphologies since the Cretaceous

摘要: Abstract The seven species of extant sea turtles show a diversity diets and feeding specializations. Some these represent distinctive ecomorphs that can be recognized by osteological characters therefore identified in fossil taxa. Specifically, modifications to the apparatus for shearing or crushing (durophagy) are easily recognizable cranium jaw. New turtle fossils from Miocene Peru, described as new genus (Pacifichelys urbinai n. gen. sp.), correspond durophagous ecomorph. This taxon is closely related recently middle California, USA hutchisoni comb.), providing additional information on this lineage. A phylogenetic analysis Pacifichelys other pan-chelonioid lineages shows at least independently evolved specialized crushing. iterative evolution morphol...