Struthiomimus Foot Claw | Aguja Formation ammonite (Wikipedia)

(Wikipedia)

such as chalks and limestones

Septarians received their name because of this aragonite division

Celestite was named for its pale sky-blue color (from the Latin term caelestis meaning "heaven

Flint occurs chiefly as nodules and masses in sedimentary rocks

Struthiomimus Foot Claw | Aguja Formation ammonite (Wikipedia)Struthiomimus Foot Claw Late Cretaceous Campanian 70 Million Years Ago Aguja Formation Brewster County, Texas Specimen approx. size: 1" Comes in an acrylic case Struthiomimus (meaning "ostrich mimic") is a genus of ornithomimid dinosaurs from the late Cretaceous of North America. Ornithomimids were long legged, bipedal, theropod dinosaurs which bore somewhat of a resemblance to modern ostriches. They were probably among the fastest of all dinosaurs.