Scaphitoid cephalopods of the Colorado group. Evolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States.
Cobban, William Aubrey, 1916-
Scaphitoid cephalopods of the Colorado group. Evolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States. - Washington, U.S. Govt. Print. Off., 1951. - iii, 42 p. illus., 21 plates. 29 cm. - Geological Survey professional paper 239 . - Geological Survey (U.S.). Professional paper ; 239. .
"References": p. 39.
gs 52000121
Ammonoidea.
Scaphites.
Paleontology--Cretaceous.
QE75 / .P9 no. 239
564.53
I 19.16:239
Scaphitoid cephalopods of the Colorado group. Evolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States. - Washington, U.S. Govt. Print. Off., 1951. - iii, 42 p. illus., 21 plates. 29 cm. - Geological Survey professional paper 239 . - Geological Survey (U.S.). Professional paper ; 239. .
"References": p. 39.
gs 52000121
Ammonoidea.
Scaphites.
Paleontology--Cretaceous.
QE75 / .P9 no. 239
564.53
I 19.16:239