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Baculitidae is a family of extinct ammonoid cephalopods that lived mostly during the Late Cretaceous, and often included in the suborder Ancyloceratina. Baculitid genera are characterized by a small to minute initial coil of about two whorls followed by a long straight or slightly curved shaft. Genera are distinguished on the basis of size, general shape, particulars of the suture, and ornamentation. They can reach lengths of or more.〔 Baculitids are found worldwide in deposits from the upper Albian to the Maastrichtian ages.〔 Related families are the Anisoceratidae, Diplomoceratidae, Hamitidae, Nostoceratidae, and Turrilitidae; all of which along with the Baculitidae are included in the superfamily Turrilitaceae. Genera included in the family include: *''Baculites'' *''Boehmoceras'' *''Eubaculites'' *''Euhomaloceras'' *''Fresvillia'' *''Hyphantoceras'' *''Lechites'' *''Pseudobaculites'' *''Sciponoceras'' *''Tuberosciponoceras '' ==References== 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「Baculitidae」の詳細全文を読む スポンサード リンク
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