Boquillas Formation
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The Boquillas Formation is a geologic formation deposited during the Late Cretaceous in modern-day West Texas. It is typically composed of alternating marls and limestones with thin volcanic ash beds.
Limestone of the Boquillas Formation in Big Bend National Park
Buda Limestone
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The Buda Limestone is a geological formation in the High Plains and Trans-Pecos regions of West Texas and in southern New Mexico, whose strata date back to the Late Cretaceous. Pterosaur remains are a
Boquillas Formation
…Member, Terrell Member, Lozier Canyon Member, Antonio Creek Member, Scott Ranch Member, Langtry Member Underlies Austin Chalk or Aguja Formation Overlies Buda Limestone Lithology Primary Marl Other Limestone, volcanic ash beds Location Region West Texas Country United States Type section Named for Boquillas post office…
Plate from "Fauna of the Buda Limestone"