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Ancyloceras matheronianum : ウィキペディア英語版 | Ancyloceras matheronianum
''Ancyloceras matheronianum'' is an extinct species of heteromorph ammonite cephalopod belonging to the family Ancyloceratidae. It is the type species of the genus. These fast-moving nektonic carnivores lived during the Cretaceous period, Lower Aptian age (from 125.45 to 122.46 Ma). 〔(The Paleobiology Database ) 〕〔(Discover Yale ) 〕 Fossils of this species are found in the marine strata of France, Russia and Morocco. ==Description== ''Ancyloceras matheronianum'' ammonites have quite large shells, reaching a length of about . They are heteromorph shaped, with a partly uncoiled shell and the aperture directed toward the coiled part.〔(Ammonites ) 〕
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「Ancyloceras matheronianum」の詳細全文を読む
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