Post by safossils on Jul 27, 2004 22:29:58 GMT -5
A sequence of late Pliocene sediments known as the 111 Ranch beds is exposed as badlands terrain in the northern part of the San Simon valley,north of Interstate 10. These deposits contain a signi ficant Blancan-aged assemblage of mammals,reptiles,and birds that date to the beginning of the Ice Age,about 2.5 million years ago.Over 50 species have been recorded in the literature,including animals such as deer and rabbits that still live in the area,animals such as camels and giant tortoises that no longer live in North America,and classic Ice Age mammalssuch as mastodonts,ground sloths,and glyptodonts that no longer live at all.
pubs.usgs.gov/of/2004/1062/4_thrasher.pdf
pubs.usgs.gov/of/2004/1062/4_thrasher.pdf