Ursus spelaeus, Cave Bear Tooth (Canine) Alamosaurus is the largest and best-known

is the largest and best-known genus of an extinct Permian order of seed ferns

Location: Huxia Formation

the fossils are covered in golden pyrite

erectus was significantly more complex than that of its predecessors

Ursus spelaeus, Cave Bear Tooth (Canine) Alamosaurus is the largest and best-knownU. spelaeus possessed a well evolved dental battery. Behind a row of 6 incisors protruded two very large and robust canines. From there the gum was void of teeth back to the most rearward premolar. The molars, however, were substantial. Longer and wider than those of any of the cave bears predecessors, the molars had large grinding surfaces which were employed in grinding plants. The chewing muscles must have been exceptionally large judging from the