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Bogoslovskaya, Leonova & Shkolin |
1995 |
The Carboniferous-Permian boundary and ammonoids from the Aidaralesh section, southern Urals.
Journal of Paleontology 69: 288-301, 12 figs., Lawrence, KS.
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Leonova |
1992 |
Ammonoidei. In: Leven,E.Ya., Leonova,T.B. & Dmitriev,V.Yu.: Perm' Darvaz-Zaalaiskoi zony Pamira: fuzulinidy, ammonoidei, stratigrafiya.
Trudy Paleontologicheskogo Instituta Rossiyskaya Akademiya Nauk, 253: 110-167, pl.29-32, figs.24-46; Moskva.
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Nassichuk & Lin |
1992 |
Ammonoids and Fusulinaceans near the Carboniferous-Permian boundary in the Canadian Arctic Archipelago
Permophiles, Subcomm.Permian Stratigraphy, 21:11-15, 1 tab.,
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