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Zell, P. and Stinnesbeck, W. 2015. Kimmeridgian (Late Jurassic) cold-water idoceratids (Ammonoidea) from southern Coahuila, northeastern Mexico, associated with Boreal bivalves and belemnites. Revista Mexicana de Ciencias Geológicas. 32, 1 (Apr. 2015). DOI:https://doi.org/10.22201/cgeo.20072902e.2015.1.271.