Corbulidae - Corbulas

Corbulidae, the corbulas, have shells that are ovate, oblong or triangular. The posterior end usually tapers to a truncate or angular point and has a rounded ridge from the beak to the posterior point. The outer shell may be smooth but usually has concentric ridges. The right shell is larger and overlaps the left shell. The corbulas can bury themselves or attach to hard substrates. There are 5 species found in Texas waters.