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Paleogene. Canyon Group / Caddo Creek Formation. Carboniferous. Canyon Group / Graford Formation. Carboniferous. Canyon Group / Palo Pinto Formation. Carboniferous. Canyon Group / Winchell Formation. Carboniferous.
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.
Diagram illustrating the Early Cretaceous long-necked dinosaur Sauroposeidon with anachronistic humans to scale †Sauroposeidon †Sauroposeidon proteles †Saurornitholestes †Saurornitholestes langstoni – or unidentified comparable form †Sauvagesia – tentative report †Scapanorhynchus †Scapanorhynchus texanus †Scapherpeton ...
The Javelina Formation is a geological formation in Texas. Dating has shown that the strata date to the Maastrichtian stage of the Late Cretaceous, approximately 70 to 66.5 million years old. [1] The middle part of the formation has been dated to about 69 million years ago plus or minus 1 million years and the top situated near the Cretaceous ...
The prehistoric bony fish of Texas are known largely from Cretaceous rocks. Fossils include mostly teeth, vertebrae, and scales, although sometimes well preserved skeletons are found in the Austin Chalk member. [6] During the Turonian Texas was home to the fish Pachyrhizodus leptopsis. [15] Early Cretaceous heart urchins and biscuit urchins.
Washita Group. Location. Region. Texas. Country. United States. The Duck Creek Formation is a geologic formation in Texas. It preserves fossils dating back to the Cretaceous period.
Fredericksburg Group. The Fredericksburg Group is a geologic group in Texas, United States. It preserves fossils dating back to the Cretaceous period.
The Trinity Group is a group (sequence of rock strata) in the Lower Cretaceous lithostratigraphy of Texas, Arkansas, Mississippi, Louisiana and Oklahoma. [2][3][4] It is named for the Trinity River of Texas. A stratigraphic column at the Mount Bonnell Fault location starts with the Lower Cretaceous Trinity Group overlain by the Edwards Group.