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Pachycormiformes : ウィキペディア英語版 | Pachycormiformes
Pachycormiformes is an extinct order of ray-finned fish known from Mesozoic deposits from Eurasia and the Americas. They were characterized by having serrated pectoral fins, reduced pelvic fins and a bony rostrum. Their relations with other fish are unclear. Some sources place Ichthyodectidae herein too, but these seem to be somewhat more advanced Teleostei. ==Sources/external links==
*http://www.courtenaymuseum.ca/paleo/paleo/pachycor.html *http://www.palaeos.com/Vertebrates/Units/100Neopterygii/100.600.html * * (【引用サイトリンク】title=Pachycormiformes )
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Pachycormiformes」の詳細全文を読む
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