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The bones were the disarticulated remains of bears, deer, mice, and a kind of eastern wood rat not currently found in the area of the fossil discovery. [17] More recently, in 1989, the Pennsylvanian sea lily, Delocrinus missouriensis, was designated the Missouri state fossil. In 2004, Hypsibema missouriensis was designated the state dinosaur ...
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.
This article contains a list of fossil-bearing stratigraphic units in the state of Missouri, U.S. Sites. Group or Formation
Fossil of the Middle-Late Ordovician giant trilobite Isotelus. †Isotelus †Isotelus gigas †Isotelus maximus †Jeffersonia †Kendallina †Kirengella †Kirkella – type locality for genus †Lepidophyllum †Lingula †Liroceras †Matthevia †Maximites †Meristella †Meristina †Metacoceras †Murchisonia – tentative report
Between the two zones is the Missouri Gravity Low, or MGL, a mass of low density granite including the Missouri batholith up to 370 miles long and 60 miles wide, identified in gravity surveys. Igneous activity ended around 1.3 billion years ago, with the intrusion of numerous dikes and sills into newly crystallized rhyolite and granite.
Elevations and strata dips in the Ozark structural dome generally radiate downward and outward away from the Saint Francois mountains. These ancient mountains may be the only area in the Midwestern United States never to have been submerged, (as evidenced by the lack of marine fossils) existing as an island archipelago in the Paleozoic seas.
The deepest fossil, a fragment of leg bone, could be as old as 86,000 years—that sure changes the arrival time of humans in Southeast Asia. "This really is the decisive paper for the Tam Pá ...
A large basal desmatosuchine aetosaur based on fossils originally referred to "Stagonolepis" (=Calyptosuchus) wellesi, a close relative. Fossils of Scutarx represent the highest stratigraphic occurrence of Stagonolepis-like aetosaurs in Petrified Forest National Park. Shuvosaurus [32] S. inexpectatus [32] Arizona [32] Owl Rock [32] Petrified ...