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Furnish, Glenister & Kummel |
1976 |
Reinterpretation of ceratitic ammonoids from the Grevelle Formation, New Zealand.
Geological Magazine, 113: 39-46, 1 fig., London.
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Waterhouse |
1973 |
An Ophiceratid ammonoid from the New Zealand Permian and its implications for the Permian-Triassic boundary.
Geological Magazine, 110: 305-329, 5 figs., 2 pls., London.
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