00977cam a22002771i 4500001001300000003000400013005001700017008004100034010001700075035001900092040003100111050002200142051001700164082001100181086001600192100002900208245004100237260004900278300007100327410005700398500013200455504002900587650002400616650003200640650002700672gs 53000243 DLC20260227111400.0780414s1953    dcuadf   b   f000 0 eng    ags 53000243   a(OCoLC)3802784  aDLCcOClUdISSdOCoLCdDLC00aQE75b.P9 no. 250  aQE807.N4bK8  a564.520 aI 19.16:2501 aKummel, Bernhard,d1919-00aAmerican Triassic coiled nautiloids.  aWashington :bU.S. Govt. Print. Off.,c1953.  a104 p. :bill., 19 plates on 10 leaves, diagrs., tables. ;c29 cm.20aGeological Survey (U.S.).tProfessional paper ;v250  a"A study of the classification and evolution of late Paleozoic and early Mesozoic cephalopods, and description of new species."  aBibliography : p. 89-93. 0aNautiloidea, Fossil 0aPaleontologyzUnited States 0aPaleontologyyTriassic