Sphenodiscus lenticularis
Sphenodiscus lobatus
Eukaryota | Animalia | Mollusca | Cephalopoda | Ammonoidea | Acanthocerataceae | Sphenodiscidae | Sphenodiscus | Sphenodiscus lobatus
COL:CS5HF | COL:N | COL:M2L | COL:7NF3H | COL:NY | COL:4RG | COL:GHF | COL:7KRT | COL:4YVH7
(Chatton, 1925) Whittaker & Margulis, 1978 |  |  | Cuvier, 1795 |  |  | Hyatt, 1900 | Meek, 1871 | (Tuomey, 1856)