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On land, early flowering plants were blooming in the state. [3] The fossil of the hadrosaurid dinosaur Parrosaurus have been found in Bollinger County. In fact, fossils of Parrosaurus are among the only known dinosaur remains in the state. [3] The Mississippi embayment still covered part of Missouri during the early Cenozoic.
This list of the Paleozoic life of Missouri contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Missouri and are between 538.8 and 252.17 million years of age. There is no Permian age rocks on the surface in Missouri, so beware of any fossils identified as such in the state.
Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris †Alethopteris †Alethopteris davreuxi †Alethopteris decurrens †Alethopteris grandini †Alethopteris serlii †Alethopteris valida †Amphiscapha † Ananias †Annularia †Annularia sphenophylloides †Annularia stellata †Anomphalus †Anthracoceras
Hypsibema missouriensis (/ ˌ h ɪ p s ɪ ˈ b iː m ə m ɪ ˌ z ʊər i ˈ ɛ n s ɪ s /; [1] originally Neosaurus missouriensis, first renamed to Parrosaurus missouriensis, [1] [2] also spelled Hypsibema missouriense [3]) is a species of plant-eating dinosaur in the genus Hypsibema, and the state dinosaur of the U.S. state Missouri.
This article contains a list of fossil-bearing stratigraphic units in the state of Missouri, U.S. Sites. Group or Formation Period Notes Altamont Formation:
US: Montana, Wyoming: Non-Avian Dinosaurs, some mammals, turtles, crocodilians, and fish Coon Creek [Note 2] Coon Creek Formation: Cretaceous (Maastrichtian) North America: US: Tennessee and Mississippi: Marine reptiles, particularly mosasaurs and plesiosaurs; Invertebrates: Turritella (sea snails), bryozoans, clams, crabs, shrimp and some sharks
Currently, excavation is being conducted by the Missouri Ozark Dinosaur Project. [4] [15] The site has been covered to prevent water from flowing over dig material. [11] [15] The Chronister dig site near Glen Allen, currently under private ownership by Stinchcomb, [12] who purchased the site from the Chronister family in the early 1980s. [15]
During the Early Cretaceous, new dinosaurs evolved to replace the old ones. Sauropods were still present, but they were not as diverse as they were in the Jurassic Period. Theropods from the Early Cretaceous of North America include dromaeosaurids such as Deinonychus and Utahraptor, the carnosaur Acrocanthosaurus, and the coelurosaur Microvenator.