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Protodrepanostoma
Taxonomy
Protodrepanostoma was named by Germain (1929). It is extant.
It was assigned to Helicodontidae by Harzhauser and Neubauer (2018).
It was assigned to Helicodontidae by Harzhauser and Neubauer (2018).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1929 | Protodrepanostoma Germain |
| 2018 | Protodrepanostoma Harzhauser and Neubauer p. 129 |
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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. 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 MN 6 or 15.98000 to 12.75000 Ma
Minimum age of oldest fossil (stem group age): 13.82 Ma
Minimum age of oldest fossil (stem group age): 13.82 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| MN 5 | Germany (Baden-Württemberg) | Helicodonta involuta (172950 172951) | |
| MN 6 | Poland | Helicodonta involuta, P. hecklei (231086) P. involutum (231087) |