|Publication Type:||Journal Article|
|Year of Publication:||1988|
|Authors:||T. Hidalgo, DTorres Per|
|Journal:||Boletin Geologico y Minero|
|Keywords:||CARNIVORA, MAMMALIA, Ursidae, Ursus arctos|
The mandible, as the skull, reflects biomechanical changes, that took place in the U. etruscus-U. deningeri-U. spelaeus evolutive lines. The U. etruscus mandible has ancestral features. The U.spelaeus mandible has contrasting characters. U. deningeri represents an intermediate evolutive state. The brown bear jaw keeps, slightly enlarged, the main characteristics of its ancestor U. etruscus, but the second premolar is absent. Atlas and axis reflect the important morphological changes that took place at the cave bear skull: there is an important increase of the dorso- ventral diameter of the vertebrae and its gravity center moved backwards.
Bears (Mammalia, Carnivora, Ursidae) of the Iberian Pleistocene (U. deningeri Von Reichenau, U. spelaeus Rosenmuller- Heinroth, U. arctos Linneo): II. Anatomical and metrical study of the jaws, hyoids, atlas and axis vertebrae