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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 article contains a list of fossil-bearing stratigraphic units in the state of Missouri, U.S. Sites. Group or Formation
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.
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
Geologic map of the St. Francois Mountain region. The St. Francois Mountains were formed by volcanic and intrusive activity 1.485 billion (1.485 x 10 9) years ago. [6] By comparison, the Appalachians started forming about 460 million years ago, and the Rockies a mere 140 million years ago.
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.
The flora and fauna of the ridge seem more closely related to the Tennessee hills to the east than to the Ozark Mountains to the west. This unique habitat has been protected by the establishment of several state and city parks, the St. Francis National Forest, recreational lakes, and in 1997 a national scenic byway, the Crowley's Ridge Parkway.
The Chattanooga Shale is a geological formation in Alabama, Arkansas, Georgia, Kentucky, Missouri and Tennessee. It preserves conodont fossils dating to the Devonian period. [ 1 ] It occurs mostly as a subsurface geologic formation composed of layers of shale .