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Becker, House & Menner |
2000 |
Revision of ammonoid biostratigraphy in the Frasnian (Upper Devonian) of the Southern Timan (Northeast Russian Platform). [R.T.Becker,M.R.House,V.V.Menner & N.S.Ovnatanova].
Acta Geologica Polonica, 50: 67-97, 10 text-figs., 3 tabls., 4 pls., Warszawa.
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Wedekind |
1918 |
Die Genera der Palaeoammonoidea (Goniatiten). (Mit Ausschluß der Mimoceratidae, Glyphioceratidae und Prolecanitidae).
Palaeontographica, 62: 85-184, fig.1-54, pl.14-22; Stuttgart.
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