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Glenister & Furnish |
1961 |
The Permian ammonoids of Australia.
Journal of Paleontology, 35 (4): 673-736, fig.1-17, pl.78-86; Tulsa,Oklahoma.
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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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