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Isfarispira
Taxonomy
Isfarispira was named by Gubanov et al. (1995) [Sepkoski's age data: S Ldov-u , S Wenl-l]. It is not extant. Its type is Isfarispira septata.
It was assigned to Omphalotrochidae by Gubanov et al. (1995); to Euomphalina by Sepkoski (2002); and to Pycnomphalinae by Peel (2018).
It was assigned to Omphalotrochidae by Gubanov et al. (1995); to Euomphalina by Sepkoski (2002); and to Pycnomphalinae by Peel (2018).
Species
I. perlata, I. septata (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 1995 | Isfarispira Gubanov et al. |
| 2002 | Isfarispira Sepkoski |
| 2018 | Isfarispira Peel |
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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. †Isfarispira Gubanov et al. 1995
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†Isfarispira perlata Hall 1852
†Isfarispira septata Gubanov et al. 1995
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. S. Peel 2018 | Large, lenticular gastropod with up to ten or more slowly expanding whorls and a radial aperture. Umbilicus largely closed by a blade-like circumbilical flange extending adumbilically as a continuation of the shallowly convex base. Shell interior with numerous adaperturally concave septa in the early stages. Ornamentation of fine comarginal growth lines. |
Measurements
No measurements are available
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| Source: f = family, c = class | |||||
| References: Bandel et al. 2002, Kiessling 2004 | |||||
Age range: base of the Wenlock to the top of the Middle Eocene or 432.90000 to 37.71000 Ma
Collections (5 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Wenlock | Tajikistan | I. septata (49963 49964) | |
| Wenlock - Ludlow | USA (Wisconsin) | Pleurotomaria perlata (24944) | |
| Ludlow | Canada (Ontario) | Pleurotomaria perlata (155723) | |
| Middle Eocene | USA (New Jersey) | Pleurotomaria perlata (91760) |