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Becker & House |
1994 |
International Devonian goniatite zonation, Emsian to Givetian, with new records from Morocco.
Courier Forschungsinstitut Senckenberg 169: 79-135, 10 text-figs., 7 pls., Frankfurt am Main.
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Klug |
2002 |
Quantitative stratigraphy and taxonomy of late Emsian and Eifelian ammonoids of the eastern Anti-Atlas (Morocco).
Courier Forschungsinstitut Senckenberg, 238: 1-109, 44 fig., 13 pl., 23 tab., Frankfurt.
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