Tarchia kielanae Coahuilaceratops and limbs to form a

and limbs to form a solid shell that was nearly impenetrable

Height 76 mm

The American mastodon was similar in appearance to modern elephants

Archeopteryx had feathers and wings

Tarchia kielanae Coahuilaceratops and limbs to form aTarchia kielanae is a species of the extinct genus Tarchia ("brain") of ankylosaurid thyreophore dinosaur, which lived in the late Cretaceous period, approximately 75 to 70 million years ago, from the Campanian to the Maastrichtian, in present day Asia. This dinosaur was discovered in the Barun Goyot Formation of Mongolia, and is known from a partial skeleton including skull, jaw, vertebrae, ribs, bony plates, and osteoderms. Tarchia kielanae is