Sphaeriidae

Genera: • Euperinae • Byssanodonta d'Orbigny, 1846 • Eupera Bourguignat, 1854 • Sphaeriinae • Afropisidium Kuiper, 1962 • Euglesa Jenyns, 1832 • Musculium Link, 1807 • Odhneripisidium Kuiper, 1962 • Pisidium C. Pfeiffer, 1821 • Sphaerium Scopoli, 1777 • fossils • †Megasphaerioides Komatsu, J.-H. Chen & Q.-F. Wang, 2003 • †Protosphaerium Hocknull, 2000 • †Sphaericoncha Kolesnikov, 1980 ==Biology and ecology==

Sphaeriidae are hermaphrodites with internal fertilization. Developing young are incubated within their mother (ovoviviparity), and newborn clams look like miniature copies of the adults. ==References==