The Roubidoux Formation is a
geologic formation
A geological formation, or simply formation, is a body of rock having a consistent set of physical characteristics ( lithology) that distinguishes it from adjacent bodies of rock, and which occupies a particular position in the layers of rock exp ...
in the
Ozarks
The Ozarks, also known as the Ozark Mountains, Ozark Highlands or Ozark Plateau, is a physiographic region in the U.S. states of Missouri, Arkansas, Oklahoma and the extreme southeastern corner of Kansas. The Ozarks cover a significant port ...
of
Missouri
Missouri is a state in the Midwestern region of the United States. Ranking 21st in land area, it is bordered by eight states (tied for the most with Tennessee): Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas t ...
and in
Virginia
Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth ar ...
. It preserves
fossils dating back to the
Ordovician
The Ordovician ( ) is a geologic period and system, the second of six periods of the Paleozoic Era. The Ordovician spans 41.6 million years from the end of the Cambrian Period million years ago (Mya) to the start of the Silurian Period Mya.
T ...
period
Period may refer to:
Common uses
* Era, a length or span of time
* Full stop (or period), a punctuation mark
Arts, entertainment, and media
* Period (music), a concept in musical composition
* Periodic sentence (or rhetorical period), a concept ...
.
Paleofauna
Monoplacophora
Monoplacophora , meaning "bearing one plate", is a polyphyletic superclass of molluscs with a cap-like shell inhabiting deep sea environments . Extant representatives were not recognized as such until 1952; previously they were known only from ...
* ''
Kirengella''
: ''K. oregonensis''
* ''
Wildernessia''
: ''W. inexpectans''
See also
*
List of fossiliferous stratigraphic units in Missouri
*
Paleontology in Missouri
*
List of fossiliferous stratigraphic units in Virginia
This article contains a list of fossil-bearing stratigraphic units in the state of Virginia, U.S.
Sites
See also
* Paleontology in Virginia
References
*
{{DEFAULTSORT:Fossiliferous stratigraphic units in Virginia
Virginia
Stratigraph ...
*
Paleontology in Virginia
Paleontology in Virginia refers to paleontological research occurring within or conducted by people from the U.S. state of Virginia. The geologic column in Virginia spans from the Cambrian to the Quaternary. During the early part of the Paleozoic ...
References
*
Ordovician Missouri
Ordovician geology of Virginia
Ordovician System of North America
Geologic formations of Missouri
Geologic formations of Virginia
Landforms of the Ozarks
Ordovician southern paleotemperate deposits
Ordovician southern paleotropical deposits
{{Virginia-geologic-formation-stub