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The term raptor is derived from the Latin word rapio, meaning "to seize or take by force". [8] The common names for various birds of prey are based on structure, but many of the traditional names do not reflect the evolutionary relationships between the groups. [citation needed] Variations in shape and size
The largest dimensions found in this species are an approximate head-to-tail length of 1.44 m (4.7 ft) and a wingspan of 3.65 m (12.0 ft). The largest bird of all time was likely the elephant bird Aepyornis maximus , which was estimated to have weighed 275–1,000 kilograms (610–2,200 lb) and stood at 3 metres (9.8 ft) tall.
Megaraptor (lit. ' large thief ') is a genus of large theropod dinosaur that lived during the Turonian and Coniacian ages of the Late Cretaceous.Its fossils have been discovered in the Patagonian Portezuelo Formation of Argentina, South America.
The fossil remains of this raptor, scientifically known as Murusraptor barrosaensis, were discovered in 2000. It took University of Alberta paleontologist Philip Currie and his team until recently ...
Size comparison of megaraptorids. Megaraptorans were medium to large-sized theropods, ranging from Fukuiraptor, which was about 4.2 meters (13.8 feet) in length, to the 9 meter (30 feet) long Aerosteon, the 9 to 10 meter (30 to 33 feet) long Maip [5] and the 12.8 meter (42 foot) long Bahariasaurus, if it is a member. [9]
In another study, floaters (i.e. birds not engaging in breeding at that time) were found to take larger prey, averaging 4.24 kg (9.3 lb), than those that were nesting, for which prey averaged 3.64 kg (8.0 lb), with prey species estimated to weigh a mean of 1.08 kg (2.4 lb) (for common opossum) to 10.1 kg (22 lb) (for adult crab-eating raccoon ...
The Chinese municipality of Chongqing, which is the largest city proper in the world by population, comprises a huge administrative area of 82,403 km 2, around the size of Austria. However, more than 70% of its 30-million population are agricultural workers living in a rural setting .
They found the maxilla to be a reliable reference when inferring the shape of the premaxilla and overall snout. For instance, most Asian species have elongated snouts based on the maxilla (namely velociraptorines), indicating a selective feeding in Velociraptor and relatives, such as picking up small, fast prey. In contrast, most North American ...