Pachycormiformes

(from the article `holostean`) The division Holosteans includes the orders Semionotiformes, Pycnodontiformes, Amiiformes, and perhaps Pachycormiformes. In these orders the ...
Found on http://www.britannica.com/eb/a-z/p/1

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...
Found on http://en.wikipedia.org/wiki/Pachycormiformes
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