An African twin to the BrazilianCalamopleurus(Actinopterygii: Amiidae)
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文摘
A new species of amiid fish,Calamopleurus africanussp. nov., is described on the basis of fragmentary material from? Albian Kem Kem beds of southern Morocco. The new species shows several derived characters of the genusCalamopleurussuch as ossified dermopterotic ribs, an inferred loose association between the dermosphenotic and the skull roof, a gular plate with a scalloped posterior margin, and a hyomandibular with a very long posterior (opercular) process. It differs from the type species in the proportions of the frontals, supramaxilla and gular. The distribution ofCalamopleurusand some other Lower Cretaceous fishes is discussed in the context of the presumed adjacency of west Africa and eastern Brazil during much of the Mesozoic.