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Available dinosaurs include Brachiosaurus
it was more basal ("primitive") than true crown-tetrapods
Their heads were horn-less but equipped with tusk-like lower incisors and were held in a horizontal position
were up to 7 feet (2
This mammal had four short
Giant Enrolled Phacops Trilobite (Replica) Pachycephalosaurus Available dinosaurs include BrachiosaurusThis softball sized enrolled trilobite has very large eyes. Eyes that wrapped around to a point that Phacops could see almost 360 degrees. Eyes composed of uniquely rounded lenses instead of the standard trilobite hexagonal shape. Eyes that were and are Phacops' most distinguishing aspect. Because of these unique optical features, this most popular of trilobites could easily traverse the shallow Devonian seas that were it's home. Trilobites are very