Deinonychus is a genus of carnivorousdromaeosauriddinosaur that existed during the Early Cretaceous. It contains only a single species, D. antirrhopus. Fossils of the 3.4 meter (11 ft) long dinosaur have been recovered from the U.S. states of Montana, Wyoming, and Oklahoma, though teeth attributed to Deinonychus have been found as far east as Maryland. A 1960s study of Deinonychus revolutionized the way scientists thought about dinosaurs, leading to the "Dinosaur renaissance" and igniting a debate on whether dinosaurs were warm-blooded. Where the popular conception of dinosaurs had been one of plodding reptilian giants, the study's description of Deinonychus' small body, sleek horizontal posture, ratite-like spine and enlarged raptorial claws suggested an active, agile predator. As in other dromaeosaurids, the tail vertebrae have a series of ossified tendons and super-elongated bone processes. These features would seem to make the tail into a stiff counterbalance, but fossils of closely-related species suggest that, in life, the tail could swish to the sides with a high degree of flexibility. Deinonychus teeth and other remains have been found closely associated with those of the ornithopod Tenontosaurus, implying that it was hunted or at least scavenged upon by Deinonychus.
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... that a planet was discovered around the star MOA-2009-BLG-387L after it eclipsed a background star, refracting the star's light in a process called gravitational microlensing?
A 1925 photo of Wongudan, an altar site in Seoul built in 1897 as a location for the performance of the rite of heaven. KingSeongjong of the Goryeo Dynasty was the first to perform the rite, designed to ensure a bountiful harvest, in the tenth century. The practice was discontinued by later Goryeo kings, revived briefly in the mid fifteenth century by Sejo of the Joseon Dynasty, then reinstated with the founding of the Korean Empire in 1897. Much of the altar complex was destroyed during the Japanese occupation, and the gate and fountain seen here were also subsequently removed, leaving only the three-storey Hwangungu pagoda remaining.
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