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Mikesh, Glenister & Furnish |
1988 |
Stenolobulites n.gen., Early Permian ancestor of predominantly Late Permian paragastrioceratid subfamily Pseudogastrioceratidae.
The University of Kansas Paleontological Contributions, 123: 1-19, fig.1-10, tab.1; Lawrence, Kansas.
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Tharalson |
1984 |
Revision of the Early Permian ammonoid family Perrinitidae.
Journal of Paleontology, 58 (3): 804-833, fig.1-24, 1tab.; Lawrence, Kansas.
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