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Wakinyantanka are large, tridactyl, and bipedal pes prints, with the middle (third) toe being the longest (mesaxonic), typical of theropod footprints. The digits of Wakinyantanka are long and slender, and are widely divaricating so that the prints are roughly as wide as they are long, averaging between 55–60 centimetres (22–24 in) long and 60 centimetres (24 in) wide.
Eagle Ford stratigraphic column Outcrop of the Eagle Ford and Austin Chalk Contact off Kiest Blvd, 1/2 mile east of Patriot Pky in Dallas County. The Eagle Ford Group (also called the Eagle Ford Shale) is a sedimentary rock formation deposited during the Cenomanian and Turonian ages of the Late Cretaceous over much of the modern-day state of Texas.
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.
James Smithson (1765–1829) is well known as the benefactor of the Smithsonian Institution in Washington D.C. The Smithsonian now houses the finest collection of minerals and gems in the world. John Ruskin (1819–1900) was an Englishman, essayist and art critic who gained an interest early in his life for minerals. He authored a small volume ...
Archosaur discoveries are comparatively abundant in Texas, and have been recovered in some quantity since E. D. Cope worked the redbeds of the panhandle over a century ago. [36] The holotype specimen of Protoavis ( TTU P 9200 ), the paratype ( TTU P 9201 ), and all referred materials, [ Note 3 ] were discovered in the Dockum Group , from the ...
The Texas and Oklahoma red beds are sedimentary rocks, mostly consisting of sandstone and red mudstone. [8] The red color of the rocks is due to the presence of ferric oxide . [ 9 ] The rocks were deposited during the early Permian in a warm, moist climate, [ 10 ] with seasonal periods of dry conditions.
These birds ranged from about the size of a modern cassowary 1.5 to 1.8 m (4 ft 11 in to 5 ft 11 in) up to 3 m (9 ft 10 in) in the case of Dromornis stirtoni, possibly the largest bird that ever lived after the elephant bird .
Dromornis stirtoni, colloquially known as Stirton's mihirung and Stirton's thunderbird, [11] [12] was a large feathered bird that grew up to heights of 3 m (9.8 ft) and weights in excess of 500 kg and is widely thought to have been the largest avian species to have ever existed.