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The Mazon Creek fossils are found in the Upper Carboniferous Francis Creek Shale. [6] The type locality is the Mazon River (or Mazon Creek), a tributary of the Illinois River near Morris, Grundy County, Illinois. The 25 to 30 meters of shale were formed approximately , during the Pennsylvanian period.
Map all coordinates using OpenStreetMap. The Mazon River or Mazon Creek ( / məˈzɒn / ), is a tributary of the Illinois River in the United States. The confluence is near Morris, Illinois. [ 2] The Mazon River is associated with the Mazon Creek fossils of the Francis Creek Shale, which are also exposed in strip mines and quarries near the River.
The Pierre Shale is a geologic formation or series in the Upper Cretaceous which occurs east of the Rocky Mountains in the Great Plains, from Pembina Valley in Canada [2] to New Mexico. The Pierre Shale was described by Meek and Hayden in 1862 in the Proceedings of the Academy of Sciences (Philadelphia).
The Sespe Formation is a widespread fossiliferous sedimentary geologic unit in southern and south central California in the United States. It is of nonmarine origin, consisting predominantly of sandstones and conglomerates laid down in a riverine, shoreline, and floodplain environment between the upper Eocene Epoch (around 40 million years ago) through the lower Miocene.
The Pohlsepia mazonensis fossil was found specifically in the Pit 11 region, within the Francis Creek Shale Member [7]. Like most soft tissue fossils found in Mazon Creek, it is preserved as a 2D light-on-dark discolouration of the matrix [8]. The Francis Creek Shale Member of the Carbon Formation has a diverse array of preserved plants and ...
List of fossil parks around the world. List of fossil parks in India. Pleistocene fossils in Michigan. List of human evolution fossils. Malapa Fossil Site, Cradle of Humankind – Cave. Mary Anning – British fossil collector and palaeontologist (1799–1847) Paleobiology – Study of organic evolution using fossils.
Named by. Robert T. Hill [1] Year defined. 1887. 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 ...
T. gregarium fossil (part and counterpart). Amateur collector Francis Tully [] found the first of these fossils in 1955 in a fossil bed known as the Mazon Creek formation. He took the strange creature to the Field Museum of Natural History, but paleontologists were stumped as to which phylum Tullimonstrum belonged in. [7] The species Tullimonstrum gregarium ("Tully's common monster"), as these ...