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''Ceratiocaris'' is a genus of paleozoic phyllocarid crustaceans. They are typified by eight short thoracic segments, seven longer abdominal somites and an elongated pretelson somite. Their carapace is slightly oval shaped; they have many ridges parallel to the ventral margin and possess a horn at the anterior end. They are well known from the Silurian Eramosa formation of Ontario, Canada. The following species are included: *''Ceratiocaris macroura'' Collette & Rudkin, 2010 *''Ceratiocaris monroei'' Salter ''in'' Murchison, 1859 *''Ceratiocaris murchisoni'' Jones & Woodward, 1888 *''Ceratiocaris papilio'' Salter ''in'' Murchison, 1859 *''Ceratiocaris pusilla'' Matthew, 1889 *''Ceratiocaris stygia'' Salter ''in'' Murchison, 1859 *''Ceratiocaris solenoides '' M'Coy, 1849 ==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「Ceratiocaris」の詳細全文を読む スポンサード リンク
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