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Becker & House |
2000 |
Devonian ammonoid zones and their correlation with established series and stage boundaries.
Courier Forschungsinstitut Senckenberg, 220: 113-151, 3 figs., 4 tabs., Frankfurt.
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Chlupac & Turek |
1983 |
Devonian goniatites from the Barrandian area, Czechoslovakia.
Rozpravy Ustredniho ustavu geologického, 46: 1-159, fig.1-30, pl.1-32; Praha.
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