Template:Kennedy & Cobban, 1988a
- Kennedy, W.J. & Cobban, W.A. 1988. Litophragmatoceras incomptum gen. et sp.nov. (Cretaceous Ammonoidea), a cryptic micromorph from the Upper Cenomanian of Arizona. Geological Magazine 125(5): 535–539. DOI: 10.1017/S0016756800013261