The new family Caucasichthyidae (Pisces,Perciformes) from the Eocene of the North Caucasus |
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Authors: | A F Bannikov G Carnevale N V Parin |
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Institution: | 1.Borissiak Paleontological Institute,Russian Academy of Sciences,Moscow,Russia;2.Dipartimento di Scienze della Terra,Università degli Studi di Torino,Torino,Italy;3.Shirshov Institute of Oceanology,Russian Academy of Sciences,Moscow,Russia |
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Abstract: | Caucasichthys kumaensis gen. et sp. nov., a representative of a new monotypic perciform family Caucasichthyidae, from the Middle Eocene (Bartonian,
Kuma Horizon) of the North Caucasus (Gorny Luch locality) is described. The new family is characterized by elongated body,
strong preopercular spine in adults, absence of supraneurals, large pelvic fins, long caudal peduncle, and anal fin longer
at the base than soft dorsal fin. Scales vary from cycloid to spinoid on different parts of the body. Caucasichthys shares a number of apomorphic features with members of certain percoid families, most notably the Priacanthidae. However,
because of its unique combination of features, the new family cannot be properly placed within any existing perciform suborder
and it is placed incertae sedis among the Perciformes. |
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