Por lo general

including possible defensive

It is thought that they hunted large game such as bison

One of the Pteranodons perched just above the Tylosaurus

since it has not been possible to determine with certainty

Archaeopteryx Scale:1:1 Por lo generalArcheopteryx (A. lithographica 'Oldwing') is an extinct species of primitive bird that lived during the Late Jurassic Kimmeridgian period, approximately 150 million years ago, in what is now Germany. It is considered a transitional fossil between dinosaurs and modern birds, and is known for both its reptilian and avian characteristics. Archeopteryx had feathers and wings, but also possessed reptilian features such as teeth, wing claws, and a long,