A new coelacanth from the Early Cretaceous of Brazil (Sarcopterygii, Actinistia)
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概要
- 論文の詳細を見る
A new coelacanth fish of the genus Mawsonia, M. brasiliensis sp. nov. is described on the basis of a specimen from the Early Cretaceous Romualdo Member of the Santana Formation in the Araripe Plateau, Brazil. This is the third species of coelacanth from the Cretaceous of Brazil and the holotype is the first complete, articulated specimen of the genus. This new species differs from its congeners in the proportion of the cranium, gular plates and angular, and the position of the otic canal fossa. M. brasiliensis has thin cycloid scales without ornament (no tubercles or ridges). This new addition to the genus Mawsonia is significant in increasing understanding of the diversity of the suborder Latimeroidei in the early Cretaceous, which lineage continues to the Recent coelacanths of the genus Latimeria.
- 日本古生物学会の論文
- 2002-12-31
著者
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YABUMOTO YOSHITAKA
Kitakyushu Museum of Natural History and Human History
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Yabumoto Y
Kitakyushu Museum Of Natural History And Human History Kitakyushu Jpn
関連論文
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- A new Mesozoic coelacanth from Brazil(Sarcopterygii, Actinistia)
- Ikiculter chojabaruensis, a new genus and species of cyprinid fish from the Miocene of Iki Island, Nagasaki, Japan
- A new coelacanth from the Early Cretaceous of Brazil (Sarcopterygii, Actinistia)
- Euleiognathus, a new genus proposed for the Miocene ponyfish, Leiognathus tottori Yabumoto and Uyeno 1994 (Perciformes : Leiognathidae) from Japan
- Apsopelix miyazakii, a new species of crossognathid fish (Teleostei) from the Upper Cretaceous of Hokkaido, Japan
- Function of the pseudomaxillary fold in the mouth opening of the coelacanth, Latimeria chalumnae