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Quetzalcoatlus. Quetzalcoatlus (/ kɛtsəlkoʊˈætləs /) is a genus of azhdarchid pterosaur known from the Late Cretaceous Maastrichtian age of North America. The first specimen, recovered in 1971 from the Javelina Formation, consists of several wing fragments. It was made the holotype of Quetzalcoatlus northropi in 1975 by Douglas Lawson and ...
This is a checklist of American reptiles found in Northern America, based primarily on publications by the Society for the Study of Amphibians and Reptiles (SSAR). [1] [2] [3] It includes all species of Bermuda, Canada, Greenland, Saint Pierre and Miquelon, and the United States including recently introduced species such as chameleons, the Nile monitor, and the Burmese python.
Pteranodon was the first pterosaur found outside of Europe. Its fossils first were found by Othniel Charles Marsh in 1871, [6] in the Late Cretaceous Smoky Hill Chalk deposits of western Kansas. These chalk beds were deposited at the bottom of what was once the Western Interior Seaway, a large shallow sea over what now is the midsection of the ...
A = Anapsid, B = Synapsid, C = Diapsid. It was traditionally assumed that first reptiles were anapsids, having a solid skull with holes only for the nose, eyes, spinal cord, etc.; [10] the discoveries of synapsid-like openings in the skull roof of the skulls of several members of Parareptilia, including lanthanosuchoids, millerettids, bolosaurids, some nycteroleterids, some procolophonoids and ...
Seymouria is an extinct genus of seymouriamorph from the Early Permian of North America and Europe. [1] Although they were amphibians (in a biological sense), Seymouria were well-adapted to life on land, with many reptilian features—so many, in fact, that Seymouria was first thought to be a primitive reptile.
Timeline of pterosaur research. This timeline of pterosaur research is a chronologically ordered list of important fossil discoveries, controversies of interpretation, and taxonomic revisions of pterosaurs, the famed flying reptiles of the Mesozoic era. Although pterosaurs went extinct millions of years before humans evolved, humans have ...
The first remains of Mosasaurus known to science are fragments of a skull discovered in 1764 at a subterranean chalk quarry under Mount Saint Peter, a hill near Maastricht, the Netherlands. It was collected by Lieutenant Jean Baptiste Drouin in 1766 and was procured in 1784 by museum director Martinus van Marum for the Teylers Museum at Haarlem .
Plesiosaurs were among the first fossil reptiles discovered. In the beginning of the nineteenth century, scientists realised how distinctive their build was and they were named as a separate order in 1835. The first plesiosaurian genus, the eponymous Plesiosaurus, was named in 1821. Since then, more than a hundred valid species have been described.