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American Philosophical Society
Fish Skulls: A Study of the Evolution of Natural Mechanisms: Transactions, American Philosophical Society (vol. 23, No. 2) 1933
William K. Gregory
The vast and scattered literature of ichthyology contains hundreds of figures and descriptions of the skulls of teleost fishes, both recent and fossil. Nevertheless it has seemed worth while to bring into existence the present collection of drawings of teleost skulls and to attempt a new review of the field as a whole, with special reference to problems of evolution. Contents: The Beginnings of the Fish Skull; Classification and Nomenclature of Skull Parts; The Evolution of Particular Skull Types; Isospondyli (Primitive Teleosts); Ostariophysi; Heteromi; Apodes; Mesichthyes (Intermediate Teleosts); Acanthoptyerygii (Spiny-finned Teleosts); Tentative Phylogeny of the Principal Skull Types; The Fish Skull as a Natural Mechanism; Discussion: The Fish Skull As a Document of Evolution; Summary: The Problem of Differential Growth and Evolution in Fish Skulls; Bibligraphy. Illus.
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