Authors Year Title
Landman, Tanabe & Shigeta 1996 Ammonoid Embryonic Development.
In: Ammonoid Paleobiology, N.H.Landman, K.Tanabe & R.A.Davis [eds.], 344-405, 20 figs, 1 tabls., New York (Plenum).
Landman, Mapes & Tanabe 1999 Internal Features of the Embryonic Shells of Late Carboniferous Goniatitina.
In: Olóriz,F. & Rodríguez-Tovar, Advancing Research on Living and Fossil Cephalopoda, 243-254, 8 figs., New York.
Miller & Owen 1937 A new Pennsylvanian cephalopod fauna from Oklahoma.
Journal of Paleontology, 11 (5): 403-422, fig.1-5, pl.50-52; Tulsa, Oklahoma.
Tanabe, Landman & Mapes 1994 Early shell features of some late Paleozoic ammonoids and their systematic implications.
Transactions and Proceedings of the Palaeontological Society of Japan, n.ser., 173: 384-400, 8 figs.