After Wilson & Caldwell, 1998
<==o †Furcacaudiformes Wilson & Caldwell, 1998 (“fork-tailed thelodonts”) |-- †Pezopallichthys ritchiei Wilson & Caldwell, 1998 [Pezopallichthyidae Wilson & Caldwell, 1998] `--o †Furcacaudiidae Wilson & Caldwell, 1998 |-- †Cometicercus talimae Wilson & Caldwell, 1998 |-- †Drepanolepis maerssae Wilson & Caldwell, 1998 |-- †Sphenonectris turnerae Wilson & Caldwell, 1998 `--o †Furcacauda Wilson & Caldwell, 1998 [Sigurdia; Canonia Turner, 1991] |-- †F. fredfolmae Wilson & Caldwell, 1998 `-- †F. heintzae (Dineley & Loeffler, 1976) Wilson & Caldwell, 1998 [Sigurdia heintzae Dineley & Loeffler, 1976; Canonia? heintzae (Dineley & Loeffler, 1976) Turner, 1991]
Furcacaudiformes incertae sedis:
Canonia grossi Vieth, 1980
Reference(s):
- Adrian, J. M. & Wilson, M. V. H., 1994: Early Devonian cephalaspids (Vertebrata: Osteostraci: Cornuata) from the southern Mackenzie Mountains, NorthWest Territories, Canada.
–Journal of Vertebrate Paleontology: Vol. 14, #3, pp. 301-319 - Wilson, M. V. H., & Caldwell, M. W., 1998: The Furcacaudiformes: A new order of jawless vertebrates with thelodont scales, based on articulated Silurian and Devonian fossils from northern Canada.
–Journal of Vertebrate Paleontology: Vol. 18, #1, pp. 10-29