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Apachella powwowensis
Taxonomy
Apachella powwowensis was named by Batten (1995). Its type specimen is AMNH 44916, a shell, and it is not a trace fossil. Its type locality is AMNH locality 2015, Powwow Canyon, which is in a Morrowan offshore shelf limestone in the Magdalena Limestone Formation of Texas.
Synonymy list
| Year | Name and author |
|---|---|
| 1995 | Apachella powwowensis Batten p. 13 fig. 14 |
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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.
†Apachella powwowensis Batten 1995
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. L. Batten 1995 | Moderately high-spired shell with wide selenizone bisected by a medial lira. Early whorls have stepped profile with upper whorl surface flat to concave. Periphery is at midwhorl and marked by lower selenizone margin, alveozone and base flat. Sutures shallow and sharp. Penultimate and final whorls have rounded profile with spiral cord midway between suture and selenizone. Reinforced growth lines form faint interference nodes at intersection with upper surface cord and selenizone margin. Flat to concave selenizone is bisected by medial lira. Alveozone is flat to concave with lower margin a prominent cord; it is unornamented on earlier whorls but on final whorl it has numerous very fine lirae. Rounded base is ornamented by a series of 10 irregularly spaced and developed lirae. Anomphalus. Whorls embrace on lower margin ofalveozone. Columellar lip is arcuate and slightly thickened; no parietal inductura.
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