en la zona de la actual Antártida

especialmente en la región que actualmente corresponde a Nuevo México

These deposits are generally interpreted as the result of mass mortality events

Their limb bones were massive

although incomplete in the fossils found

Archelon ischyros Variant:Unprimed en la zona de laArchelon ischyros was a giant sea turtle that lived during the Late Cretaceous period , approximately 8075 million years ago, when much of central North America was covered by a vast inland sea known as the Western Interior Seaway . This animal is considered the largest known sea turtle , and its appearance must have been as impressive as it was unmistakable as it moved through the shallow oceans of that era. Unlike many modern turtles, Archelon did