01006cam a22002891i 4500 gs 53000243 DLC 20260227111400.0 780414s1953 dcuadf b f000 0 eng gs 53000243 (OCoLC)3802784 DLC OClU ISS OCoLC DLC QE75 .P9 no. 250 QE807.N4 K8 564.52 I 19.16:250 Kummel, Bernhard, 1919- American Triassic coiled nautiloids. Washington : U.S. Govt. Print. Off., 1953. 104 p. : ill., 19 plates on 10 leaves, diagrs., tables. ; 29 cm. Geological Survey (U.S.). Professional paper ; 250 "A study of the classification and evolution of late Paleozoic and early Mesozoic cephalopods, and description of new species." Bibliography : p. 89-93. Nautiloidea, Fossil Paleontology United States Paleontology Triassic 28776 28776