Browse Items (15 total) Tags: Mesozoic Browse All Browse by Tag Search Items Previous Page of 2 Sort by: Title Creator Date Added Dinosaur (Arkansaurus fridayi) Cast of Arkansaurus fridayi right hind leg. Tags: Animals, Arkansas, Cretaceous, Dinosaurs, Fossils, Geology, Mesozoic, North America, Paleontology, Reptiles, United States Dinosaur, Ankylosauria Fossilized rib fragment, believed to belong to a member of ankylosauria. Tags: Animals, Arkansas, Dinosaurs, Fossils, Geology, Mesozoic, North America, Paleontology, United States Dinosauria A flat fragment of skull bone. Tags: Animals, Arkansas, Dinosaurs, Fossils, Geology, Mesozoic, North America, Paleontology, United States Dinosauria A flat fragment of skull bone. Tags: Animals, Arkansas, Dinosaurs, Fossils, Geology, Mesozoic, North America, Paleontology, United States Turtle Fossilized carapace fragment of a turtle. Tags: Animals, Arkansas, Cretaceous, Fossils, Geology, Mesozoic, North America, Paleontology, Reptiles, United States Previous Page of 2 Featured Item Dinosaur Includes the 1st phalanx of 4th metatarsal of right hind foot.