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72.1 MB (2.1 MB compressed)
6000 x 4200 pixels
50.8 x 35.6 cm ⏐ 20.0 x 14.0 in (300dpi)
DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Fossil skull of Hesperocyon, a primitive type of dog belonging to the family of Canidae (canids), a lineage of carnivores that includes dingoes, jackals, wolves, foxes, and many other extant and extinct dog-like mammals, including domestic dogs. The present fossil is found in the Brule formation near Chadron, Nebraska, USA, sediments of Oligocene age (34 – 23 million years), well known for their rich fossil content, notably mammals.
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