Bulletin of the Kitakyushu Museum of Natural History and Human History, Series A (Natural History)
Online ISSN : 2435-7545
Print ISSN : 1348-2653
Original Article
Kokuraichthys tokuriki n. gen. and sp., Early Cretaceous osteoglossomorph fish in Kyushu, Japan
Yoshitaka Yabumoto
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RESEARCH REPORT / TECHNICAL REPORT FREE ACCESS

2013 Volume 11 Pages 67-72

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Abstract

Kokuraichthys tokuriki is described from the Early Cretaceous Dobaru Formation of the Wakino Subgroup, Kitakyushu in the northern part of Kyushu, Japan, as a new genus and species of Osteoglossomorpha. This new species is considered to be more closely related to Hiodontiformes or Lycopteriformes than Osteoglossifonnes because it has a single epural and no neural spine on the first ural centrum. Although it has significantly fewer vertebrae (36 or 37), K. tokuriki is tentatively assigned to Hiodontiformes because of the long anal fin base, the anterior position of the dorsal fin and the reduced neural spine on the first preural centrum.

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