Five groups of Eurasian bears are recognized: black, etruscan, brown, cave and white bears. Black bears are believed to be ancestral to the other groups. Etruscan bears form a specialized line that became extinct without descent, Brown bears are Asian in origin, they reached Europe at the end of the Early Pleistocene, replacing the Etruscan bears, and gave rise, as a side branch, to the cave bear line. White bears apparently originated from north Asian brown bear populations in very recent times.
On the Phylogeny of Eurasian Bears / P.MAZZA; M.RUSTIONI. - In: PALAEONTOGRAPHICA ABTEILUNG A PALÄOZOOLOGIE, STRATIGRAPHIE. - ISSN 0375-0442. - STAMPA. - 230:(1994), pp. 1-38.
On the Phylogeny of Eurasian Bears.
MAZZA, PAUL;
1994
Abstract
Five groups of Eurasian bears are recognized: black, etruscan, brown, cave and white bears. Black bears are believed to be ancestral to the other groups. Etruscan bears form a specialized line that became extinct without descent, Brown bears are Asian in origin, they reached Europe at the end of the Early Pleistocene, replacing the Etruscan bears, and gave rise, as a side branch, to the cave bear line. White bears apparently originated from north Asian brown bear populations in very recent times.
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