Authors Year Title
Tanabe, Landman & Mapes 1993 Analysis of a Carboniferous embryonic assemblage - implications for ammonoid embryology. [Tanabe,K., Landman,N.H., Mapes,R.H. & Faulkner,C.J.].
Lethaia, 26: 215-224, 8 fig., Oslo.
Tanabe, Kulicki & Landman 2001 External features of embryonic and early postembryonic shells of a Carboniferous goniatite Vidrioceras from Kansas. (K. Tanabe, C: Kulicki, N.H.Landman & R.Mapes).
Paleontological Research, 5 (1): 13-19, 3 fig.