Gatunek typowy
Goniatites calyx Phillips, 1836 (original type species) and Goniatites smithii Brown, 1841

Opis

Shell with moderately to strongly ventrally prosiradiate growth lamellae, angular umbilical rims and umbilicus at least one third of the conch diameter.  

Synonimy

Zasięg czasowy

Carboniferous; Bashkirian

Literatura

Hyatt, A. 1884. Genera of fossil cephalopods. Boston Society of Natural History, Proceedings 22: 253-338, Boston, USA.

Titus, A.L. & Manger, W.L. 2001. Mid-Carboniferous Ammonoid Biostratigraphy, Southern Nye County, Nevada: Implications of the First North American Homoceras. Memoir (The Paleontological Society) 55 (Supplement to Vol. 75, no. 4 of the Journal of Paleontology): 1-31.