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Texas State Highway 50 leads south from Ladonia 14 miles (23 km) to Commerce. Ladonia Fossil Park is located 2 miles (3 km) north of town on the North Sulphur River. According to the United States Census Bureau, Ladonia has a total area of 2.0 square miles (5.2 km 2), all land. [6]
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 Sulphur River is a 175-mile-long (282 km) [2] river in northeast Texas and southwest Arkansas in the United States. It is a tributary of the Red River . Geography
This article contains a list of fossil-bearing stratigraphic units in the state of Texas, U.S. Sites. Group or Formation ... Pease River Group/San Angelo Group/Blaine ...
Fossils of the Late Devonian-Permian fern-like fronds Pecopteris †Pecopteris †Pecopteris arborescens †Pecopteris hemitelioides †Pecopteris unita †Pedanochiton – type locality for genus †Pelodosotis – type locality for genus †Pelodosotis elongatum – type locality for species †Peripetoceras †Petalodus †Phlegethontia ...
Texas is approximately bisected by a series of faults that trend southwest to northeast across the state, from the area of Uvalde to Texarkana.South and east of these faults, the surface exposures consist mostly of Cenozoic sandstone and shale strata that grow progressively younger toward the coast, indicative of a regression that has continued from the late Mesozoic to the present.
The Arroyo Formation is the oldest and most eastern component of the Clear Fork Group. It extends in a Northeasterly direction from Concho County up as far north as Wilbarger County. North of the Red River in Oklahoma, the equivalent formation is the upper Garber Formation and cave deposits of Richards Spur (formerly Fort Sill). [3] [4]
Acrocanthosaurus.. Archaeologist Jack. T. Hughes has found evidence that the paleo-Indians of Texas collected fossils. [20] After the establishment of paleontology as a formal science, in 1878, professor Jacob Boll made the first scientifically documented Texan fossil finds in Archer and Wichita counties while collecting fossils on behalf of Edward Drinker Cope.