Volume 47 



International Geological Congress 



1957 1 Mesozoioo del Homisferio Occidental y sua cor- 

 relaciones mundiales. (includes various papers on 

 cephalopod stratigraphy by J. Avias, H. K. Erben, 

 and P. N. Stipancio.) 1 



1962 Recommendations of the Colloquium on the Jurassic. 2 



1963 Resolutions concemant les recommendations du 



Colloque International du Jurassique, 1962. 3 



Javrorski, Erich 



1951 (Reviews of various anmonoid papers by 0. Haas 

 and R* W. Inlay.) 



Recurrence of morphologic types and evolutionary 



cycles in Mesozoic ammonites. (Haas, 1942) 4 



A recently acquired Albion ammonite from Angola. 



(Haas, 1945) 5 



Intraspeoifio variation in and ontogeny of 



tropis wooll^ari and Prionocyclua vyomingenaia. 



(Haas, 1946) 6 



Three nomenclature! problems in Liassic Ammonoidea. 

 (Haas, 1947) 7 



Madrasites a synonym of Kossnaticeras s. str. 



(Haas, 1948) 8 



Acanthoceratid Ammonoidea from near Qreybull, 



Wyoming. (Haas, 1949) 9 



Ammonite a Tetrabranchiata or Dibranchiata. (Haas, 



1950) 10 



Upper Jurassic ammonites from the Placer de Guada- 



lupe District, Chihuahua, Mexico. (Imlay, 1943) H 



Jeannet, Alphonse 



1951 Stratigraphie und palaeontologie des oolithischen 



Eisenerzlagera von Hermach und seiner umgebung. 12 



