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Melagathiceratidae : ウィキペディア英語版 | Melagathiceratidae
Melagathiceratidae is an extinct family of Lower Triassic ammonoid cephalopods belonging to the order Ceratitida established by E. T. Tozer in 1971. The type genus of the family is ''Melagathiceras''. The type species, ''Melagathiceras globosus'' was first named in by Popov in 1939, from Siberia as ''Parannites globosus''. ''Melegathiceras crassum'' Tozer, from the Canadian Arctic, is an alternative of ''Juvenites crassus''. ==References==
* (The Paleobiology Database ) accessed 2 June 12
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「Melagathiceratidae」の詳細全文を読む
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