Search results for "Sierra Madre Oriental"

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The Upper Sinemurian ammonite succession in the Sierra Madre Oriental (Mexico).

2009

International audience; In the Sierra Madre Oriental (Mexico), the biostratigraphic subdivision of the Upper Sinemurian can be refined. It has been possible to differentiate 11 horizons from the upper Obtusum Zone to the top of the Raricostatum Zone which are correlated with the NW European standard zonation. The index species of each horizon is figured.

ammonitesSierra Madre OrientalEarly Jurassicbiostratigraphy[SDU.STU.PG] Sciences of the Universe [physics]/Earth Sciences/PaleontologySinemurianMexico[ SDU.STU.PG ] Sciences of the Universe [physics]/Earth Sciences/Paleontology
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