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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.	 
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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.	 
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