Phyletic Relationships of Living Sharks and Rays

1977/05/01 by LEONARD J. V. COMPAGNO, Leonard J. V. Compagno · 14 citations
Environmental Science · Earth and Planetary Sciences · #Ichthyology and Marine Biology #Paleontology and Evolutionary Biology

paper · doi:10.1093/icb/17.2.303

Abstract

A set of hypotheses are developed for the origin of living sharks and rays and the interrelationships of their major groups, using some methods of cladistic analysis to relate groups with shared derived characters. Comparative studies on living sharks and rays combined with new data on fossil sharks suggests that the living groups ultimately stem from a common ancestral group of “neoselachian” sharks with many modern characters. Reinterpretations of “amphistyly” in modern sharks is presented on new data.

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