|
''Helcionopsis'' is an extinct genus of paleozoic monoplacophoran in the family Tryblidiidae. The generic name is from the external resemblance which the genus bear to the recent species of the genus ''Helcion'' in family Patellidae.〔 == Species == Species in the genus ''Helcionopsis'' include:〔(''Helcionopsis'' ). The Paleobiology Database, accessed 25 August 2009.〕 * ''Helcionopsis radiatum'' (Lindström, 1884) * ''Helcionopsis reticulatus'' Easton, 1943〔Easton W. H. 1943. ''The Fauna of the Pitkin Formation of Arkansas''. Journal of Paleontology 17(2):125-154.〕 * ''Helcionopsis striata'' Ulrich, 1897〔Ulrich E. O. & Scofield W. H. 1897. ''The Lower Silurian Gastropoda of Minnesota''. (page 827 ), (plate VXI ), figure 29-30.〕 * ''Helcionopsis subcarinata'' Ulrich & Scofield, 1897〔Ulrich E. O. & Scofield W. H. 1897. ''The Lower Silurian Gastropoda of Minnesota''. (page 827 )-828, (plate VXI ), figure 28.〕 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「Helcionopsis」の詳細全文を読む スポンサード リンク
|