Pleuromeris tridentata

(Three-toothed Cardita)

Size

Length: 0.6cm (0.2")

Recognition Characters

Shell is small and roughly triangular with 15-18 strong, rounded, beaded radial ribs. Shell is inflated, thick, and strongly scalloped along margin. Umbones are large, in front of center.

Color

Exterior yellowish white to mostly white sometimes with a few reddish-brown spots. Interior white, tinged with reddish- or purplish-brown.

Habitat & Depth

On sand and rubble. May also attach to rocks and rocky rubble. To 15m.

Distribution at GRNMS

May be common but unnoticeable because of small size.

Geographic Range

North Carolina south to the Florida Keys

Behavior & Notes

Synonyms

References

Rehder 1981