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
Lesser Known Heaven" on January 11, 2011 and "Rio" on February 17, 2011. Boeldt worked with Elena Johnston in creating what described as the "pretty ominous" cover art for "Lesser Known", whom Johnston chose the pictures and helped him put the chosen images together on the artwork. Reviews from music journalists upon release were generally mixed. Some reviewers disliked "Lesser Known" for having the same main problem as Adventure's debut album, that it only focused on recreating old music that was already easy to access both online and retro 1980s music stations without trying to cross over any boundaries or taking any