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Helicodontidae
Taxonomy
Helicodontidae was named by Kobelt (1904). It is extant.
It was assigned to Helicoidea by Salvador et al. (2015), Bouchet et al. (2017).
It was assigned to Helicoidea by Salvador et al. (2015), Bouchet et al. (2017).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1904 | Helicodontidae Kobelt |
| 2015 | Helicodontidae Salvador et al. |
| 2017 | Helicodontidae Bouchet et al. p. 366 |
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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.
Fm. Helicodontidae Kobelt 1904
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G. Helicodonta Ferussac 1821
G. Protodrepanostoma Germain 1929
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†Protodrepanostoma hecklei Klika 1891
†Protodrepanostoma involutum Thomä 1845
†Protodrepanostoma involutum scabiosum Sandberger 1875
Protodrepanostoma nordsiecki Falkner 1986
Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Reference: Kiessling 2004 | |||||
Age range
Maximum range based only on fossils: base of the MN 5 to the top of the Middle Pleistocene or 15.98000 to 0.12900 Ma
Minimum age of oldest fossil (stem group age): 13.82 Ma
Minimum age of oldest fossil (stem group age): 13.82 Ma
Collections (7 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| MN 5 | Germany | Helicodonta sp. (231109) Helicodontidae indet. (231112) | |
| MN 5 | Germany (Baden-Württemberg) | Helicodonta involuta (172950 172951) | |
| MN 6 | Poland | Helicodonta involuta, Protodrepanostoma hecklei (231086) Protodrepanostoma involutum (231087) | |
| Middle Pleistocene | Italy (Abruzzo) | Helicodonta obvoluta (68337) |