Potamides janeae, DeVries, 2019
|
publication ID |
https://doi.org/ 10.1080/00222933.2018.1524032 |
|
DOI |
https://doi.org/10.5281/zenodo.3671200 |
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persistent identifier |
https://treatment.plazi.org/id/03BB2338-E352-E221-FE50-A0125E88FA2D |
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treatment provided by |
Valdenar |
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scientific name |
Potamides janeae |
| status |
sp. nov. |
Potamides janeae sp. nov.
( Figure 4 View Figure 4 (r – t))
Diagnosis
Shell with broadly conical spire. Whorls with three beaded spiral cords. Varices and ventrolateral varix absent. Columella with single fold.
Description
Estimated shell length 15 mm; conical, spire angle about 25°. Protoconch unknown. Spire with at least eight whorls. Whorls flat-sided, sutures thinly incised, recessed. All preserved whorls with three beaded spiral cords. Medial spiral cord narrow, with smallest beads, and close to anterior cord. Beads nodular, spherical, aligned axially in nearly orthocline rectilinear ribs. Base of whorl demarcated by weakly beaded strong spiral cord, with adaxially adjacent, smooth, strong, quadrate spiral cord and weak third spiral cord close to axis. Remainder of base with convex axial threads. Columella with single fold anterior to midpoint. Anterior and posterior canal, if present, and outer lip not preserved.
Etymology
Named in honour of Jane Cody DeVries, mother of the author.
Material
All material from B8771 (type locality). UWBM 107579 View Materials , holotype, L (9.0), W (5.1) ; remainder are paratypes: UWBM 107580 View Materials , L (9.5), W (5.0) ; UWBM 107581 View Materials , L (4.1), W (5.0) ; UWBM 107634 View Materials , L (4.9), W (4.6) ; MUSM INV 248 , L (8.0), W (5.0) ; MUSM INV 249 , L (8.8), W (4.1)
.
Remarks
Specimens of Potamides janeae sp. nov. differ from those of P. henryi sp. nov. by having only three spiral cords, instead of four, and by having unbeaded spiral cords on the base.
Occurrence
Lower Paleogene, Cuenca Member, Caballas Formation, East Pisco Basin, southern Peru.
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