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Peruvispira ganneyica
Taxonomy
Neilsonia ganneyica was named by Peel (2016). Its type specimen is PMU 29748, a shell, and it is a 3D body fossil. Its type locality is Pot Bank Quarry Locality 4, Congleton Edge, which is in an Alportian carbonate mudstone in the Morridge Formation of the United Kingdom.
It was recombined as Peruvispira ganneyica by Karapunar and Nützel (2022).
It was recombined as Peruvispira ganneyica by Karapunar and Nützel (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 2016 | Neilsonia ganneyica Peel pp. 425 - 426 fig. 10G–I |
| 2022 | Peruvispira ganneyica Karapunar and Nützel p. 76 |
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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.
†Peruvispira ganneyica Peel 2016
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. S. Peel 2016 | Species of Neilsonia similar to Neilsonia coatesi sp. nov. but distinguished by the wider selenizone and obsolete row of comarginal tubercles on the base below the selenizone.
The earliest whorls and protoconch are not known. Teleoconch sub-trochiform, with an incremental angle of almost 60° and spire about onehalf of total height (Fig. 10G). Upper whorl surface shouldered immediately below the deeply incised suture, becoming concave and almost horizontal as the prominent cord forming the upper edge of the selenizone is approached. A similar cord forming the shell periphery marks the lower edge of the selenizone. A concave alveozone lies between the selenizone and a spiral angulation marks the junction of the outer whorl surface and the base, the latter curving uniformly into the tiny umbilicus. Outer lip sinuate, with prosocline growth lines on the upper whorl surface and shallowly prosocyrt growth lines on the base; depth of slit unknown. Selenizone concave between bordering cords and ornamented with numerous concave lunulae. A row of comarginal, radially elongate, tubercles on the sub-sutural shoulder reflects periodic thickening of the growing margin. Growth lines crossing the spiral angulation at the junction between the alveozone and base may show weak tuberculation. Whorl embracement is well below the selenizone. |
Measurements
No measurements are available
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| Source: f = family, o = order | |||||
| References: Bambach et al. 2007, Hendy 2009 | |||||