|
''Phyllograptus'' is a genus of the Order Graptoloidea, family Phyllograptidae. Fossils of this genus have been found in the Early Ordovician (475-473 million years ago), in the sediments of Australia, Bolivia, Canada, Chile, China, New Zealand, Norway, Spain, Sweden, the United Kingdom and United States. 〔 (Paleobiology Database )〕 The normal length of a colony of these leaf-shaped animals could reach a length of . They were passively mobile planktonic suspension feeders. 〔〔(Fossil Museum )〕 ''Phyllograptus'' species are excellent index fossils or guide fossils for identifying Ordovician rocks. 〔(Encyclopaedia Britannica )〕 ==Species== * ''Phyllograptus angustifolius'' * ''Phyllograptus anna'' * ''Phyllograptus densus'' * ''Phyllograptus glossograptoides'' * ''Phyllograptus rotundatus'' 〔(Fossil ID )〕 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「Phyllograptus」の詳細全文を読む スポンサード リンク
|