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Becker & Weyer |
2004 |
Bartzschiceras n. gen. (Ammonoidea) from the Lower Tournaisian of Southern France.
Mitteilungen des Geologisch-Paläontologischen Instituts der Universität Hamburg, 88: 11-36, 21 fig., 1 tab.,Hamburg.
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Miller & Collinson |
1951 |
Lower Mississippian ammonoids of Missouri.
Journal of Paleontology, 25: 454-487, fig.1-14, pl.68-71; Tulsa, Oklahoma.
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Work & Manger |
2002 |
Masonoceras, a new karagandoceratid ammonoid from the lower Mississippian (lower Osagean) of Kentucky.
Journal of Paleontology, 76 (3): 574-577, 5 fig., Lawrence, KS.
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