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Quetzalcoatlus (/ k ɛ t s əl k oʊ ˈ æ t l ə s /) is a genus of azhdarchid pterosaur that lived during the Maastrichtian age of the Late Cretaceous in North America. The type specimen, recovered in 1971 from the Javelina Formation of Texas, United States, consists of several wing fragments and was described as Quetzalcoatlus northropi in 1975 by Douglas Lawson.
Azhdarchidae (from the Persian word azhdar, اژدر, a dragon-like creature in Persian mythology) is a family of pterosaurs known primarily from the Late Cretaceous Period, though an isolated vertebra apparently from an azhdarchid is known from the Early Cretaceous as well (late Berriasian age, about 140 million years ago). [1]
Lawson began his synecological research during his master's degree studying the paleoecology of the Tornillo Formation in Big Bend National Park, Texas.During his study of this Late Cretaceous intermontane basin community, he discovered the fossil remains of the giant pterosaur, Quetzalcoatlus Northropi, which he named in honor of John K. Northrop because of its similarity to Northrop's flying ...
The Trump administration abruptly sent water flowing from two California dams. The action could leave less water in dams for the summer, when farmers typically use it.
The program starts in the Late Triassic, near modern-day New York City in the Newark Supergroup. The narrator explains how the Permian mass extinction led to new forms of life, including, eventually, the most extraordinary creatures ever to walk the planet, the dinosaurs. The camera tracks a Coelophysis through the woods.
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In four seasons at Florida, Leonard started 14 of 31 games at left guard for the Gators. Leonard started each of the 12 games for Billy Napier's squad last season, including a team-high 755 snaps.
MacCready also collaborated with General Motors on the design of the Sunraycer, a solar-powered car, and then on the EV1 electric car. [ 10 ] [ 12 ] In 1985, he was commissioned to build a halfscale [ 13 ] working replica of the pterosaur Quetzalcoatlus for the Smithsonian Institution , following a workshop in 1984, which concluded that such a ...