Kennedy, W. J. (William James); Landman, Neil H.; Cobban, William Aubrey, 1916-
(New York, NY : American Museum of Natural History, 2001)
"The Blossom Sand is a lateral equivalent of the Austin Chalk Group, developed in Fannin, Lamar, and Red River counties in northeast Texas. Ammonites from this unit are Placenticeras syrtale (Morton, 1834), Baculites sp. ...