|
Leonova, Esaulova & Shilovskii |
2002 |
The First Ammonoid Find in the Volga-Urals Region.
Doklady Earth Sciences, 383A (3):239-241, 2 fig.
|
|
|
Nassichuk |
1970 |
Permian ammonoids from Devon and Melville Islands, Canadian Arctic Archipelago.
Journal of Paleontology, 44 (1): 77-97, fig.1-13, tab.1-3, pl.19-22; Tulsa,Oklahoma.
|
|
|
Popov |
1970 |
Ammonoidei. In: Stratigrafiya kamennougol'nykh i permskikh otlozhenii Severnogo Verkhoyan'ya.
Trudy Nauchno-issledovatel'skogo instituta Geologii Arktiki, 1970: 113-140, fig.5-27, pl.13-19; Leningrad.
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