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Gerasimov |
1937 |
Ural'skii otdel permskoi sistemy.
Uchenye zapiski Kazanskogo gosudarstvennogo universiteta, 97, kniga 3-4, geologiia, vyp.8-9): 3-68, pl.1-2; Kazan.
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Glenister, Baker & Furnish |
1990 |
Additional Early Permian ammonoid cephalopods from Western Australia. [Glenister,B.F., Baker,C., Furnish,W.M. & Thomas,G.A.]
Journal of Paleontology, 64 (3): 392-399, fig.1-4, 1tab.; Tulsa, Okla.
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Ruzhencev |
1951 |
Nizhnepermskie ammonity yuzhnogo Urala. 1.Ammonity Sakmarskogo Yarusa.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 33: 1-186, fig.1-62, phot.1-8, pl.1-15; Moskva.
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