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Spinocaudichthys oumtkoutensis, a Freshwater Acanthomorph from the Cenomanian of Morocco
Arnaud Filleul and Didier B. Dutheil
Journal of Vertebrate Paleontology
Vol. 21, No. 4 (Dec. 14, 2001), pp. 774-780
Stable URL: http://www.jstor.org/stable/20062017
Page Count: 7
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A new genus and species of acanthomorph teleost, Spinocaudichthys oumtkoutensis, gen. et sp. nov., is described from the Cretaceous (Cenomanian) of Morocco. This taxon is the first Cretaceous acanthomorph ever recorded from a freshwater deposit. Its caudal fin displays dorsal and ventral procurrent spines, a feature only present in some acanthopterygian fishes. It also shares features with paracanthopterygians. However, this fish cannot be a holacanthopterygian (sensu Johnson and Patterson, 1993) because it lacks a pelvic spine and has a plesiomorphic caudal skeleton. Here, we consider it as an acanthomorph incertae sedis and we discuss relationships of the Acanthomorpha.
Journal of Vertebrate Paleontology © 2001 The Society of Vertebrate Paleontology