Date: May 11, 2016
Source: University of Pennsylvania
A doctoral student at the University of Pennsylvania has identified a new species of fossil dog. The specimen, found in Maryland, would have roamed the coast of eastern North America approximately 12 million years ago, at a time when massive sharks like megalodon swam in the oceans.
The newly named species is Cynarctus wangi, named for Xiaoming Wang, curator at the Natural History Museum of Los Angeles County and an expert on mammalian carnivores. This coyote-sized dog was a member of the extinct subfamily Borophaginae, commonly known as bone-crushing dogs because of their powerful jaws and broad teeth.
"In this respect they are believed to have behaved in a similar way to hyenas today," said the study's lead author, Steven E. Jasinski, a student in the Department of Earth and Environmental Science in Penn's School of Arts & Sciences and acting curator of paleontology and geology at the State Museum of Pennsylvania in Harrisburg.
Fossils from terrestrial species from this region and time period are relatively rare, thus the find helps paleontologists fill in important missing pieces about what prehistoric life was like on North American's East Coast.
"Most fossils known from this time period represent marine animals, who become fossilized more easily than animals on land," Jasinski said. "It is quite rare we find fossils from land animals in this region during this time, but each one provides important information for what life was like then."
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