Scientific Classification
| Kingdom: Animalia |
| Phylum: Mollusca |
| Class: Bivalvia |
| Order: Imparidentia |
| Family: Cardiidae |
| Genus: Trachycardium |
| Species: Trachycardium parile (Dall, 1900) |
Information
Geological Range
Paleogeographic Distribution
Stratigraphic Occurrences
| Chipola Formation |
Remarks
Common name: n/a
Synonymy: n/a
Type specimen, locality, and stratum: n/a
Other voucher specimens: n/a
Descriptions:
Original Description (from Dall, 1900, p. 1086-1087):
“Oligocene of the lower bed at Alum Bluff and on the Chipola River, Calhoun County, Florida.
Shell small, suborbicular, inflated, nearly equilateral, the posterior end slightly more attenuated and produced; beaks full but not high; sculptured with twenty-five ribs having in section the form of a truncated pyramid, separated by narrower channelled interspaces, elegantly concentrically closely striated; the anterior ten ribs bear A -shaped projections, the anterior wing of the A being broad and produced, the posterior narrow and appressed; the four ribs next posterior have on their tops slender arcuate transverse rather sparse imbrications; behind these the projections shift to the posterior side of the summits of the ribs, gradually becoming more oblique, losing the anterior wing of the arch, and finally appearing as delicate spinules nearly parallel with the ribs; interior margin behind strongly serrate, below and in front fluted, the flutings continued to the umbonal cavity as shallow sulci; hinge normal, delicate; a narrow, smooth area between the most anterior rib and the hinge-margin. Alt. 15, Ion. 15.5, diam. 10 mm.
This little species appears to be rather abundant in the sands.”
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 June 23, 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.
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