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The fossil record of Texas spans almost the entire geologic column from Precambrian to Pleistocene. [3] Shark teeth are probably the state's most common fossil. During the early Paleozoic era Texas was covered by a sea that would later be home to creatures like brachiopods, cephalopods, graptolites, and trilobites.
2.1 Selected Paleozoic taxa of Texas. 3 Mesozoic. Toggle Mesozoic subsection. ... Mold fossil of a shell of the Early Devonian-Late Triassic bivalve Aviculopecten ...
List of the Paleozoic life of Texas. This list of the Paleozoic life of Texas contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Texas and are between 538.8 and 252.17 million years of age.
Geology of Texas. Texas contains a wide variety of geologic settings. The state's stratigraphy has been largely influenced by marine transgressive-regressive cycles during the Phanerozoic, with a lesser but still significant contribution from late Cenozoic tectonic activity, as well as the remnants of a Paleozoic mountain range.
Llano Uplift. Precambrian and Paleozoic inlier surrounded by Cretaceous uplands. The Llano Uplift is a geologically ancient, low geologic dome that is about 90 miles (140 km) in diameter and located mostly in Llano, Mason, San Saba, Gillespie, and Blanco counties, Texas. It consists of an island-like exposure of Precambrian igneous and ...
The Archer City Formation is a geological formation in north-central Texas, preserving fossils from the Asselian and early Sakmarian stages of the Permian period.It is the earliest component of the Texas red beds, introducing a tropical ecosystem which will persist in the area through the rest of the Early Permian.
The Red Beds of Texas and Oklahoma are a group of Early Permian -age geologic strata in the southwestern United States cropping out in north-central Texas and south-central Oklahoma. They comprise several stratigraphic groups, including the Clear Fork Group, the Wichita Group, and the Pease River Group. [1] The Red Beds were first explored by ...
The "classic area" of the Arroyo Formation is one of the most fossiliferous parts of the Texas Red Beds, and it is typically differentiated from surrounding formations by paleontologists on the basis of faunal differences. [8] [12] [13] A large number of sites are known bearing either abundant plant or animal remains.