Catalog of the fossil fishes in the Carnegie Museum. Part III. Catalog of fossil fishes from the lithographic stones of Cerin, France
1914; Volume: 6; Issue: 6 Linguagem: Inglês
10.5962/p.234834
ISSN0885-4645
Autores Tópico(s)Evolution and Paleontology Studies
ResumoThe subject matter of the following Catalog consists of a large and representative assortment of Upper Jurassic fishes from Cerin (Ain) in southeastern France, the material being contained in the Bayet Collection, which was acquired by the Museum through the generosity of Mr. Andrew Carnegie in 1903.It is now generally considered that the deposits of lithographic limestone in the Department of Ain, France, and in the vicinity of Solenhofen, Bavaria, are of contemporary age, both being referable to the Lower Kimmeridgian division of the marine Upper Jura, and not to the Corallian (upper member of the Middle Jura), as some writers have supposed.The stratigraphic relations of the fish-bearing beds at Cerin will be clear from an inspection of the annexed diagram showing the geological section across this region.Essentially the same ichthyic fauna is represented in the lithographic stone of Cerin, France, and in similar deposits of the general region around Solenhofen, Bavaria; the latter locality, however, furnishing the more abundant and more diversified forms of animal life.The composition of the fish-fauna is essentially " ganoid "; that is to say, teleost fishes of the Crossopterygian and Actinopterygian orders predominate, cartilaginous forms are in the minority, and the Dipnoan sub-class is without known representatives.Among Elasmobranch fishes the Batoidei, or rays, outnumber the sharks, and Holocephali occur very sparsely 349
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