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There is a page named "Helcionopsis striata" on Wikipedia
Helcionopsis striata is an extinct species of paleozoic monoplacophoran in the family Tryblidiidae. The shell is rather strongly convex, acuminate-ovate...2 KB (241 words) - 20:25, 18 April 2022
genus Helcionopsis include: Helcionopsis radiatum (Lindström, 1884) Helcionopsis reticulatus Easton, 1943 Helcionopsis striata Ulrich, 1897 Helcionopsis subcarinata...3 KB (233 words) - 00:51, 2 August 2021- †Hebertella sinuata †Hedeina †Hedeina eudora †Hedstroemia †Helcionopsis †Helcionopsis striata †Helicelasma †Helicelasma rusticum †Helicotoma †Helicotoma...62 KB (3,078 words) - 07:49, 13 February 2024
- †Grewingkia †Grewingkia canadensis †Hallopora †Hedstroemia †Helcionopsis †Helcionopsis striata †Hibbertia †Hindia †Holopea †Hyolithes †Illaenus †Isotelus...31 KB (1,106 words) - 17:39, 22 February 2024
- †Hebertella occidentalis †Hebetoceras – tentative report †Helcionopsis †Helcionopsis depressum †Helcionopsis wisconsinensis †Helicotoma †Helicotoma planulata †Helopora...49 KB (3,084 words) - 02:13, 6 August 2024
- rectifurcata †Hederella reimanni †Hederella thedfordensis †Hederella vagans †Helcionopsis †Helicelasma †Helicelasma rusticum †Helicotoma †Heliolites †Heliophyllum...118 KB (5,967 words) - 07:49, 13 February 2024
