Helcionopsis radiatum.jpg
Georg Liljevall (Georg Gideon Liljevall) (17 January 1848 Stockholm, Sweden - 8 December 1928 Lärbro, Gotland County, Sweden)<ref>http://gutarforr.tingstade.com/index.php?option=com_content&task=view&id=3447&Itemid=43 accessed 22 August 2009</ref>
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Helcionopsis radiatum, Drawings by Georg Liljevall, Helcionopsis
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en
Helcionopsis radiatum, Drawing of dorsal view of the shell of ''Helcionopsis radiatum'', synonym ''Tryblidium radiatum''. Head region is on the left., Fossilized shell of the Silurian mollusc Helcionopsis
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ja
ゲオルク・リリヴァルによる素描、ヘルシオノプシス
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キイロショウジョウバエの背面図頭部は左側にあり、シルル紀の軟体動物ヘルシオノプシスの化石化した貝殻。
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