Apatosaurus considered a junior synonym of "Apatosaurus"; its only species was reclassified as "A.excelsus" in 1903. A 2015 study concluded that "Brontosaurus" is a valid genus of sauropod distinct from "Apatosaurus", but not all paleontologists agree with this division. As it existed in North America during the late Jurassic, "Apatosaurus" would have lived alongside dinosaurs such as "Allosaurus", "Camarasaurus", "Diplodocus", and "Stegosaurus". "Apatosaurus" was a large, long-necked, quadrupedal animal with a long, whip-like tail. Its forelimbs were slightly shorter than its hindlimbs. Most size estimates are based on specimen CM3018, the type specimen of "A.louisae". In 1936 this was measured to
The Known Lands the various sentient races have built nations and civilizations. It is a time of peace and prosperity. But though peace reigns over much of The Known Lands, it is not a time of tranquility. In the past fifty years, The Known Lands have been shocked with the realization that below their islands exists a subterranean world at least as large as their own – the Underdark. A formerly unknown race, the drow, has twice come into the Known Lands from this underworld. Two massive attacks by the drow have all but destroyed the citadel homelands of the dwarves, leaving that