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The genus was one of the first Mesozoic marine reptiles known to science—the first fossils of Mosasaurus were found as skulls in a chalk quarry near the Dutch city of Maastricht in the late 18th century, and were initially thought to be crocodiles or whales. One skull discovered around 1780 was famously nicknamed the "great animal of Maastricht".
Oklahoma was a terrestrial environment for most of the ensuing Mesozoic era. [3] The Late Triassic Dockum Group of western Oklahoma preserved remains of archosaurs and temnospondyls, although its fossil record is restricted to a narrow region of the panhandle and is far sparser than the equivalent records in Texas, New Mexico, and Arizona. [98]
The Lewis and Clark Expedition may have discovered the first Mosasaurus fossil in North America. The first possible recorded discovery of a mosasaur in North America was of a partial skeleton described as "a fish" in 1804 by Meriwether Lewis and William Clark's Corps of Discovery during their 1804–1806 expedition across the western United States.
This article contains a list of fossil-bearing stratigraphic units in the state of Oklahoma, U.S. Sites. Group or Formation
Paleontologists recently described the previously unknown mosasaur from fossils found near the North Dakota town of Walhalla. ... It includes a near-complete skull with a bony ridge over the eyes ...
Mosasaurini is an extinct tribe of mosasaurine mosasaurs who lived during the Late Cretaceous and whose fossils have been found in North America, South America, Europe, Africa and Oceania, with questionable occurrences in Asia.
The locations given as water monster habitat are similar to the locations where local marine fossils can be found as fossils often erode out of hillsides or stream banks. The Cheyennes feared the water monsters, because they could be dangerous predators or capsize their canoes. Even in modern times, tradition-minded Cheyenne sometimes take ...
The McLemore Site is located on a terrace overlooking Cobb Creek outside the town of Colony in central western Oklahoma. The first major archaeological investigation took place in 1960 under the auspices of Dr. Robert E. Bell of Oklahoma State University. Three sections of the site were excavated: an area of cache and refuse pits, an area once ...