- Craspedochiton hystricosus Kaas, 1991
- Hemiarthrum setulosum P. P. Carpenter [in Dall], 1876
- Lepidochiton albus (Linnaeus, 1767) accepted as Stenosemus albus (Linnaeus, 1767)
- Lepidochiton cancellatus (G. B. Sowerby II, 1840) accepted as Leptochiton cancellatus (G. B. Sowerby II, 1840)
- Nuttallochiton mirandus (Thiele, 1906)
- Placiphorella atlantica (A. E. Verrill & S. Smith, 1882)
- Placiphorella uschakovi Yakovleva, 1952 accepted as Placiphorella atlantica (A. E. Verrill & S. Smith, 1882)
- Placophora (Euplacophora) atlantica A. E. Verrill & S. Smith, 1882 accepted as Placiphorella atlantica (A. E. Verrill & S. Smith, 1882)
- Trachydermon albus (Linnaeus, 1767) accepted as Stenosemus albus (Linnaeus, 1767)