Scientific Classification
| Kingdom: Animalia |
| Phylum: Mollusca |
| Class: Gastropoda |
| Order: Neogastropoda |
| Family: Fasciolariidae |
| Genus: Polygona |
| Species: Polygona hypsipetta (Dall, 1890) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
| Bermont Formation [Questionable/rare] |
| Caloosahatchee Formation [Common] |
| Tamiami Formation (Pinecrest Beds) [Questionable/rare] |
Remarks
Common name: n/a
Synonymy:
Previously listed as Polygona hypsipettus on the Neogene Atlas of Ancient Life.
Type specimen, locality, and stratum: n/a
Other voucher specimens: n/a
Descriptions:
Original Description (from Dall, 1890, p. 108):
“Shell elevated, slender, acute, nine-whorled, with strong sculpture and a very short canal; nucleus smooth, subglobose, of a whorl and a halfy subsequent whorls with spiral sculpture of (on the last whorl about nine) strong, distant threads, with much wider, rather smooth interspaces; of these threads three appear on the upper whorls, the posterior thread somewhat the most prominent; between the latter and the suture behind it the whorl is appressed toward the suture and shows a few much finer spirals, but these are absent between the primaries; transverse sculpture of rather marked lines of growth, rarely raised and imbricated near the suture, and (on the last whorl seven) stout, rounded ribs, obsolete near the suture and on the canal; base of the whorl constricted; canal short, deep, nearly straight, with a strong fasciole; outer lip simple, internally lirate ?, inner lip callous, with one or two plaits anteriorly. Lon. of shell 25.0; of aperture 10.8; max. diam. of shell 10.3 mm.
A single nearly adult and several young specimens were found in the Caloosahatchie marls.
This species is distinguishable from the preceding by its shorter canal, stronger sculpture, absence of tessellated sculpture between the spirals and of the presutural constriction. It does not seem closely related to any known recent species of the local fanna.”
To access this description in its original formatting through Google Books, click here.
Measurements: n/a
Other remarks: n/a
References: n/a
Online resources: n/a
Page history:
Some of the content on this page was originally published on the Neogene Atlas of Ancient Life on April 29, 2014. It was developed by Jonathan R. Hendricks and colleagues and migrated here in 2026.
This page was last modified on October 28, 2026 by Jonathan R. Hendricks.
Media
Images
