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Lobolytoceras : ウィキペディア英語版 | Lobolytoceras
''Lobolytoceras''a Lytoceratid genus included in the Alocolytoceratinae in which only the inner whorls have large swollen ribs, later whorls have wrinkled growth lines which coarsen somewhat, near the aperture. The genus is known from the Lower Jurassic Toarcian of Europe. The type species ''L. siemensi'' (Denck) came from the Upper Toarcian of Germany.〔 ==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「Lobolytoceras」の詳細全文を読む
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