Apatosaurus is one of the more popular dinosaur species, although for most people it is more recognizable as the "brontosaurus." Native to the Jurassic period, Apatosaurus is known for four species that have been discovered to date: A. ajax, A. excelsus, A. louisae and A. parvus. While Apatosaurus is also known as Brontosaurus, it has another synonym as well: Elosaurus. A … [Read more...]