Diplodocus now common scientific opinion that "Seismosaurus hallorum" is a species of "Diplodocus". This genus of dinosaurs lived in what is now mid-western North America at the end of the Jurassic period. "Diplodocus" is one of the more common dinosaur fossils found in the middle to upper Morrison Formation, between about 154 and 152 million years ago, during the late Kimmeridgian age. The Morrison Formation records an environment and time dominated by gigantic sauropod dinosaurs, such as "Apatosaurus", "Barosaurus", "Brachiosaurus", "Brontosaurus", and "Camarasaurus". "Diplodocus" is among the most easily identifiable dinosaurs, with its typical sauropod shape, long neck and tail, and
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