Eochiton arbucklensis (FOSSIL) Smith & Toomey, 1964 †
Ivoechiton calathicolus (FOSSIL) Smith & Toomey, 1964 †
Gotlandochiton hami (FOSSIL) Smith & Toomey, 1964 †
Gotlandochiton interplicatus (FOSSIL) J.R.M. Bergenhayn, 1955 †
Paleochiton kindbladensis (FOSSIL) Smith & Toomey, 1964 †
Ivoechiton levis (FOSSIL) J.R.M. Bergenhayn, 1955 †
Ivoechiton oklahomensis (FOSSIL) Smith & Toomey, 1964 †
Paleochiton siskiyouensis (FOSSIL) Hoare, 2000 †