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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]
Ivan the T. rex - found by Alan Komrosky and Gary Olson in 2007, this giant Tyrannosaurus rex is about 65% fossil. When it was found, it had the most complete tail of any T. rex, with only three vertebrae missing. "Sea Creatures of the Plains" - Showcasing Kansas Marine fossils, such as a 34 ft. Tylosaurus, a Xiphactinus, and a mosasaur.
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".
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
Some mosasaurs measured just a few feet long, while the largest — in the genus Mosasaurus — was nearly 60 feet (18.2 meters) long, and while mosasaur fossils are relatively plentiful ...
A lot of that early research can be found on the pages of The Cretaceous Fossils of New Jersey, first printed in 1958, and reprinted in 1991. Dinosaurs, reptiles, microbes and more: Check out NJ's ...
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.