000 00297nam a2200097Ia 4500
100 _aClark D L
245 _aHeteromorphy Ammonoids From the Albian and Cenomanian of Texax and Adjacent Areas
260 _bGeological Soc of America, U S A
082 _aH534:U.7331/N65/B07758
300 _app 99; 25*16
999 _c7999
_d7999