Wiktionary
supersaurus
n. Any of the large herbivorous diplodocid dinosaurs of the genus (taxlink Supersaurus genus).
Wikipedia
Supersaurus
Supersaurus (meaning "super lizard") is a genus of diplodocid sauropod dinosaur first discovered by Vivian Jones of Delta, Colorado, in late Jurassic period rocks of the middle Morrison Formation of Colorado in 1972, and later in Portugal under the name S. lourinhanensis. The fossil remains came from the Brushy Basin Member of the formation, dating to about 153 million years ago.