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Permian crinoid columnals from the Zamora Formation near El Volcan, Baja California Norte, Mexico

By
Gary D. Webster
Gary D. Webster
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Marc P. Delattre
Marc P. Delattre
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Published:
January 01, 1993

Disarticulated Permian crinoid columnals and pluricolumnals, up to 9 cm in diameter, from exotic carbonate blocks in the base of the Zamora Formation, found along Arroyo Zamora near El Volcan, Baja California, Norte, are among the largest ever reported. The relatively inflexible columns that these columnals and pluricolumnals formed are interpreted to have lived in relatively strong currents along the edge of the shelf or upper slope. They are designated Apletoanteris bajaensis n. gen. and n. sp.

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GSA Special Papers

The Prebatholithic Stratigraphy of Peninsular California

R. Gordon Gastil
R. Gordon Gastil
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R. H. Miller
R. H. Miller
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Geological Society of America
Volume
279
ISBN print:
9780813722795
Publication date:
January 01, 1993

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