Spyroceras
Spyroceras
Eukaryota | Animalia | Mollusca | Cephalopoda | Orthoceratoidea | Pseudorthoceratida | Pseudorthoceratoidea | Pseudorthoceratidae | Spyroceratinae | Spyroceras
COL:CS5HF | COL:N | COL:M2L | COL:7NF3H | COL:9GLX9 | COL:C35TT | COL:C4X3D | COL:C4X3B | COL:C4QX5 | COL:D6P34
(Chatton, 1925) Whittaker & Margulis, 1978 |  |  | Cuvier, 1795 | Teichert, 1967 |  | Flower & Caster, 1935 | Flower & Caster, 1935 | Shimizu & Obata, 1935 | Hyatt, 1884