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Helicotoma
Taxonomy
Helicotoma was named by Salter (1859) [Sepkoski's age data: O Aren O Ashg-m Sepkoski's reference number: 615]. Its type is Helicotoma planulata.
It was assigned to Euomphalidae by Ulrich and Scofield (1897); to Helicotominae by Wenz (1938), Knight et al. (1960), Morris and Cleevely (1981) and Wagner (1999); to Archaeogastropoda by Sepkoski (2002); and to Helicotomidae by Bouchet et al. (2005).
It was assigned to Euomphalidae by Ulrich and Scofield (1897); to Helicotominae by Wenz (1938), Knight et al. (1960), Morris and Cleevely (1981) and Wagner (1999); to Archaeogastropoda by Sepkoski (2002); and to Helicotomidae by Bouchet et al. (2005).
Species
H. blodgetti, H. brocki, H. declivis, H. gorgonea, H. granosa, H. griffinorum, H. marginata, H. miser, H. missouriensis, H. oriens, H. planulata (type species), H. planulatoides, H. proserpina, H. robinsoni, H. robusta, H. subquadrata, H. superba, H. tennesseensis, H. tritonia, H. umbilicata, H. verticalis, H. whiteavesiana
Synonymy list
| Year | Name and author |
|---|---|
| 1859 | Helicotoma Salter p. 14 figs. pl. 2, figs. 5-7 |
| 1897 | Helicotoma Ulrich and Scofield |
| 1938 | Helicotoma Wenz pp. 87, 241 |
| 1960 | Helicotoma Knight et al. p. 189 |
| 1981 | Helicotoma Morris and Cleevely |
| 1999 | Helicotoma Wagner |
| 2002 | Helicotoma Sepkoski |
| 2005 | Helicotoma Bouchet et al. pp. 87, 241 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Helicotoma Salter 1859
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†Helicotoma blodgetti Rohr 1988
†Helicotoma brocki Foerste 1912
†Helicotoma declivis Safford 1869
†Helicotoma gorgonea Billings 1865
†Helicotoma granosa Ulrich and Scofield 1897
†Helicotoma griffinorum Rohr 1980
†Helicotoma marginata Ulrich and Scofield 1897
†Helicotoma miser Billings 1865
†Helicotoma missouriensis Branson 1909
†Helicotoma oriens Perner 1903
†Helicotoma planulata muricata Salter 1859
†Helicotoma planulatoides Ulrich and Scofield 1897
†Helicotoma proserpina Billings 1865
†Helicotoma robinsoni Rohr 1988
†Helicotoma robusta Ulrich and Scofield 1897
†Helicotoma subquadrata Ulrich and Scofield 1897
†Helicotoma superba Koken 1897
†Helicotoma tennesseensis Safford 1869
†Helicotoma tritonia Billings 1865
†Helicotoma umbilicata Ulrich and Scofield 1897
†Helicotoma verticalis Ulrich and Scofield 1897
†Helicotoma whiteavesiana Raymond 1908
Diagnosis
No diagnoses are available