Müller, P.; Hahn, G. (2017). Grigopyrgus n. gen., a new agelacrinitid genus from the Lower Devonian of the Westerwald (Echinodermata, Rhenish Slate Mountains, Germany). Mainzer Geowissenschaftliche Mitteilungen. 45: 93-102.
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Müller, P.; Hahn, G.
2017
Grigopyrgus n. gen., a new agelacrinitid genus from the Lower Devonian of the Westerwald (Echinodermata, Rhenish Slate Mountains, Germany)