Mangelia acucincta

Scientific Classification


Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Order: Neogastropoda
Family: Drillidae
Genus: Mangelia
Species: Mangelia acucincta (Dall, 1890)

Information

Geological Range

Pleistocene

Pliocene

Paleogeographic Distribution

Stratigraphic Occurrences

Bermont Formation

Caloosahatchee Formation

Waccamaw Formation

Duplin Formation

Raysor Formation

Tamiami Formation (Pinecrest Beds)

Remarks

Synonymy: Drillia acucincta (Dall, 1890): p. 32, pl. 2, fig. 11.

Type Specimen: USNM 97321 (holotype), “Caloosahatchie River, near Fort Thompson, Florida” (Merrill, 1905, p. 234).

Other Combinations: Drillia acucincta Dall, 1890 Mangelia acucincta (Dall, 1890) (Accepted name)

Original Description: From Dall, 1890 (p. 32):“Caloosahatchie beds; rare. Shell thick and solid, short-fusiform, strongly sculptured; whorls about ten; spiral sculpture undulated by the ribs and comprising a single very small thread at the suture separated by a shallow gutter from a very strong, sharp and elevated waved keel; in front of this is the wide, deep anal fasciole; then come (on the upper whorls two or three, on the last whorl eight) strong, uniform sharp threads separated by wider, uniform interspaces; then the canal with rounder, smaller crowded threads; between the primaries is fine uniform spiral striation, fainter on the fasciole; transverse sculpture of (on the last whorl seven) strong, rounded ribs, broadest at the shoulder and extending to the constriction behind the canal, with narrower interspaces; there is also more or less fine transverse striation caused by the strong incremental lines; the last rib is swollen and varicose; notch short, rounded; body-callus well developed with a posterior nodule opposite the notch; outer lip sharp, arcuate; throat without lire; canal short, shallow; an umbilical chink behind the callus on the pillar; aperture narrow. Max. lon. of shell 20.0; max. lat. 8.2 mm. Only two specimens of this strongly marked species were obtained from the marl.”

Online Resources

WoRMS record 1785599, as Mangelia acucincta †.

Mollusca Base record 1785598.

References

Dall, W. D. 1890. Contributions to the Tertiary Fauna of Florida, with especial reference to the Miocene Silex-Beds of Tampa and the Pliocene beds of the Caloosahatchie River. Part I. Pulmonate, opisthobranchiate and orthodont gastropods. Transactions of the Wagner Free Institute of Science of Philadelphia, 3(1): 1-200, pls. 1-12. BHL.