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Isotelus ''Isotelus'' is a genus of asaphid trilobite from the middle and upper Ordovician period, fairly common in the Northeastern United States, northwest Manitoba, southwestern Quebec and southeastern Ontario. One species, ''Isotelus rex,'' is currently the world's largest trilobite ever found as a complete fossil. ==Discovery and naming== A specimen of ''Isotelus rex'', from Churchill, Manitoba, is the largest complete trilobite ever found. Discovered by Dave Rudkin (Royal Ontario Museum), Robert Elias (University of Manitoba), Graham Young (Manitoba Museum) and Edward Dobrzanske (Manitoba Museum) in 1999, it measures in length, in maximum width (across the cephalon) and in maximum height (at the posterior midpoint of the cephalon).〔(【引用サイトリンク】title=The World's Largest Trilobites )〕〔(【引用サイトリンク】title=''Isotelus rex'', biggest trilobite ever )〕 Large specimens have also been found in Ohio, where ''Isotelus maximus'' is the state fossil.
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「Isotelus」の詳細全文を読む
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