The descriptions and ranges for the following chitons are taken from Sea Shells of Tropical West America by A. Myra Keen and/or Monograph of Living Chitons, Five Volumes by Piet Kaas & Richard A. Van Belle,

Nuttallina crossata(Berry, 1956)
ISCHNOCHITONIDAE
Range: Northern Gulf of California



Chaetopleura hennahi (Gray, 1828)
ISCHNOCHITONIDAE
Range: Ancon, Peru south to Arica, Chile



Chaetopleura lanuginosa mixta (Dall, 1919)
ISCHNOCHITONIDAE
Range: Upper Gulf of California south to Angeles Bay



Chaetopleura lurida (Sowerby, 1832)
ISCHNOCHITONIDAE
Range: Central Gulf of California to Peru



Ischnochiton dispar (Sowerby, 1832)
ISCHNOCHITONIDAE
Range: Nicaragua to Panama



Ischnochiton muscarius (Reeve, 1847)
ISCHNOCHITONIDAE
Range: Tiburon Island, Gulf of California south to Acapulco, Mexico



Stenoplax corrugata (Carpenter in Pilsbry, 1892)
ISCHNOCHITONIDAE
Range: Costa Rica to Peru



Stenoplax limaciformis (Sowerby, 1832)
ISCHNOCHITONIDAE
Range: Northern part of Gulf of California south to Peru



Stenoplax magdalenensis (Hinds, 1845)
ISCHNOCHITONIDAE
Range: San Felipe south to Cedros Island, Gulf of California



Stenoplax mariposa (Bartsch in Dall, 1919)
ISCHNOCHITONIDAE
Range: Conception Bay, southern Gulf of California south to Guaymas, Mexico



Lepidozona clathrata (Reeve, 1847)
ISCHNOCHITONIDAE
Range: Northern end of Gulf of California south to Magdalena Bay, Baja California



Callistochiton elenensis (Sowerby, 1832)
ISCHNOCHITONIDAE
Range: Northern Gulf of California to Panama>



Callistoplax retusa (Sowerby, 1832)
ISCHNOCHITONIDAE
Range: Tres Marias Islands south to Panama



Ceratozona angusta Thiele, 1909
ISCHNOCHITONIDAE
Range: El Salvador to Nicaragua



Chiton albolineatus Broderip & Sowerby, 1829
CHITONIDAE
Range: Mazatlan, Mexico to Guatemala



Chiton articulatus Sowerby, 1832
CHITONIDAE
Range: Northern Gulf of California to Acapulco, Mexico



Chiton cumingsii Frembly, 1827
CHITONIDAE
Range: Chile



Chiton goodallii Broderip, 1832
CHITONIDAE
Range: Galapagos Islands



Chiton magnificus Deshayes, 1827
CHITONIDAE
Range: Chile



Chiton stokesi Broderip, 1832
CHITONIDAE
Range: Southern Mexico to Ecuador



Chiton virgulatus Sowerby, 1840
CHITONIDAE
Range: Northern Gulf of California to Magdalena Bay, Baja California



Acanthopleura echinata (Barnes, 1824)
CHITONIDAE
Range: Peru



Enoplochiton niger (Barnes, 1824)
CHITONIDAE
Range: Peru



Tonicia chilensis (Frembly, 1827)
CHITONIDAE
Range: Chile



Tonicia forbesi Carpenter, 1857
CHITONIDAE
Range: Gulf of Caifornia to Panama



Acanthochitona exquisita (Pilsbry, 1893)
ACANTHOCHITONIDAE
Range: Gulf of California<



Acanthochitona hirundiformis (Sowerby, 1832)
Range: Peru. Galapagos Islands