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Pleurolucina amabilis

Geological Range

Late Pliocene to Middle Pleistocene; Extinct.

Paleogeographic Distribution

Southern Florida.

Remarks

This species was originally figured in Dall (1898) without a written description.

Original Description (from Dall, 1903, p. 1368-1369):

"Pliocene marls of the Caloosahatchie and Shell Creek; Dall and Burns.

Shell solid, high, short, laterally very convex, longitudinally subcompressed, with large, moderately impressed, cordiform dorsal areas; beaks small, narrow, prosogyrate, with a small, globular, deeply excavated lunule, much larger proportionately and more open in the young shell; ligament very short; surface with little raised, flattish, concentric threads closely adjacent and with only linear interspaces; radial sculpture of four broad ribs separated by narrow, shallow sulci, which become obsolete towards the base, and an impressed line bordering the escutcheon; the middle pair of ribs occupy about one-third of the disk; hinge strong, teeth conical, normal; scars normal, inner margin of the valves entire, except some very minute crenulations near the middle of the base. Alt. 16.5, Ion. 11.0, diam. 15.0 mm.

This is one of the most elegant species of the genus. The young, in which the lunule is apparently much larger and more open, at first would be taken for a distinct species."

To access this description in its original formatting through Google Books, click here.

Stratigraphic Occurrences

Middle Pleistocene
Bermont Formation (S. FL)
Early Pleistocene
Caloosahatchee Formation (S. FL)
Late Pliocene
Tamiami Formation (Pinecrest Beds) (S. FL)
<i>Pleurolucina amabilis</i> from the Late Pliocene Tamiami Fm. (Pinecrest Beds) of Sarasota County, Florida (UF 146721).
Pleurolucina amabilis from the Late Pliocene Tamiami Fm. (Pinecrest Beds) of Sarasota County, Florida (UF 146721).
Specimen of <i>Pleurolucina amabilis</i> figured by Dall (1898, pl. 25, fig. 9 and 9a); 15.5 mm in length.
Specimen of Pleurolucina amabilis figured by Dall (1898, pl. 25, fig. 9 and 9a); 15.5 mm in length.
Middle Pleistocene Map
Middle Pleistocene Map
Early Pleistocene Map
Early Pleistocene Map
Late Pliocene Map
Late Pliocene Map