Archaeopteryx Berlin specimen is considered the most famous fossil in the world. It is about 150 Ma & was discovered in limestone deposits in Eichstaett, Bavaria. Archaeopteryx has bird flight feathers, but also has reptile features such as a tail bone & claws on the wing bones
The bones & fossilized heart of a 66-M-yr old dinosaur skeleton is shown, 4/20/2000, at the N Carolina Mus of Nat. Sciences in Raleigh, NC. The fossilized heart - w/two ventricles & a single aortic stem, between an apex of shoulder bones, is the first one ever found in a dinosaur
Fossilized dinosaur eggs and embryos reveal a wealth of information about the dinosaur reproduction, development, and behavior. Large dinosaur nests that have been found in the United States, Argentina, and Mongolia showed that some dinosaurs nested in huge groups and that they return to their nesting grounds year after year.
Huge New Dinosaur Trackway Found in U.S. Dinosaurs "stomping in the mud" left prints pointing to pigeon-toed hunter.
Ammonites are an extinct group of marine invertebrate animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs are more closely related to living coleoids than they are to shelled nautiloids such as the living Nautilus species.