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''Flexicalymene'' is a genus of trilobites of the order Phacopida, suborder Calymenina. They are found abundantly in North America. ''Flexicalymene'' specimens can be mistaken for ''Calymene'', ''Gravicalymene'', ''Diacalymene'' and a few other Calymenina genera. They are used as an index fossil in the Ordovician. Ohio and North America are particularly known for being rich with ''Flexicalymene'' fossils. Species include ''F. meeki'' and ''F. retrorsa'' (Ohio, Kentucky and Indiana), ''F. granulosa'' (Ohio, Kentucky and Quebec), ''F. senaria'' (Quebec) and ''F. croneisi'' (Ontario). File:Flexicalymene meeki cephalon view.JPG|''Flexicalymene meeki''; Waynesville Formation; Upper Ordovician; Caesar Creek, Ohio. Image:Flexicalymene meeki pygidium view.JPG|''Flexicalymene meeki''; Waynesville Formation; Upper Ordovician; Caesar Creek, Ohio. File:Flexicalimene_Meeki.jpg|''F. meeki'' File:Flexicalymene_PAStateMuseum.jpg|''Flexicalymene'' species on display at State Museum of Pennsylvania. Specimen is approximately 3 cm long File:Flexicalymene-ouzregui-rolled.jpg| Rolled ''F. ouzregui'' ==References== *('' Trilobite info (Sam Gon III)'' ) 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「Flexicalymene」の詳細全文を読む スポンサード リンク
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