Paleontology of Missouri

Journal of Paleontology

ABTRACT--Available museum collections have been utilised for a functional analysis of common members of the bivalve fauna of the Cretaceous Chalk Formation of England. It is concluded that many members of the fauna were able to inhabit their unusual environment by virtue of specialised adaptations. There is an apparent paucity of infaunal bivalves in true Chalk lithology, and the fauna is domin...

Genetics, Paleontology, and Macroevolution

Paleontology: C. Stock

Paleontology: C. Stock

It is easily seen that the Kasner circle, mentioned in I, shrinks to a point. Thus II loses its meaning, the derivative clock being merely a point. But III' does not become meaningless. For the associated affinity T reduces to the functional relation between the points of a neighborhood of z and the corresponding values of w'(z). Thus the assertion that T is a direct similarity says exactly tha...

Avian Paleontology and Evolution

Miocoracias chenevali, nov. gen., nov. spec., a new genus and species of roller (Aves: Coraciiformes s. s.: Coraciidae) is described from the Early Miocene of Saint-Gérand-le-Puy. This family had not yet been reported from the rich fossil avifauna of this area. Although the material is fragmentary it shows morphological characteristics different from those of the extinct family Geranopteridae, ...