The Pleistocene of North America / and its vertebrated animals from the states east of the Mississippi River and from the Canadian provinces east of longitude 95°

by Oliver Perry Hay

MICHIGAN.

(Map [22].)

1. Adrian, Lenawee County.—In 1880 the U. S. National Museum received from Professor Kost, then of Adrian College, a skull of Castoroides ohioensis discovered at the place named above. In his communication he wrote that at the same place there had been found previously a mastodon and bones of an elk and of a deer. The place was in a marsh, in Adrian, and the fossils were at a depth of 4 feet.

2. Ann Arbor, Washtenaw County.—In 1908, Russell and Leverett (Folio 155, U. S. Geol. Surv., p. 9) reported the discovery of bones of deer and elk in a peat-swamp, 3 miles south of Ann Arbor. In the same swamp had been found, at a depth of 5 feet, a skull of Castoroides ohioensis. The bones of the deer and elk were at a somewhat higher level, so that it is not wholly certain they belong to the Pleistocene.

The specimens found both at Adrian and Ann Arbor lived there after the retreat of the Wisconsin ice.