Anomia microgrammata

Table of Contents

Scientific Classification


Kingdom: Animalia
Phylum: Mollusca
Class: Bivalvia
Order: Pectinida
Family: Anomiidae
Genus: Anomia
Species: Anomia microgrammata (Dall, 1898)

Information

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, 1898, p. 783):

“Oligocene of the Chipola beds at the Chipola River and the lower bed at Alum Bluff, Florida; also at Ballast Point, Tampa Bay, Dall, Burns, and Willcox; and at Bowden, Jamaica, Henderson and Simpson.

Shell small, irregular, characterized by a fine, almost microscopic, close-set radial striation covering the whole surface and flaring away from the medial line of the valve in a somewhat wavy manner; the two lower scars on the left valve are subequal and side by side, the major byssal scar larger, opposite the medial line between them; the beak of the left valve is some distance within the margin, and the surface where worn appears smooth; the striation is only visible under a lens in most cases. Alt. 17, lat. 25 mm.

This species is recognizable by its fine, almost divaricate striation, which does not break into pustules near the beaks, as in the larger and more coarsely sculptured A. ephippioides.

The specimens from Bowden have a still finer and often partially obsolete striation. They form the variety indecisa (Guppy, MS.).”

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 September 4, 2015. 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.