Tomhegan Formation

Last updated

Tomhegan Formation
Stratigraphic range: Devonian
Type Formation
Location
RegionFlag of Maine.svg  Maine
CountryFlag of the United States.svg  United States

The Tomhegan Formation is a geologic formation in Somerset County, Maine. It preserves fossils dating back to the Devonian period. [1]

Maine State of the United States of America

Maine is a state in the New England region of the northeastern United States. Maine is the 12th smallest by area, the 9th least populous, and the 38th most densely populated of the 50 U.S. states. It is bordered by New Hampshire to the west, the Atlantic Ocean to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and northwest respectively. Maine is the easternmost state in the contiguous United States, and the northernmost state east of the Great Lakes. It is known for its jagged, rocky coastline; low, rolling mountains; heavily forested interior; and picturesque waterways, as well as its seafood cuisine, especially lobster and clams. There is a humid continental climate throughout most of the state, including in coastal areas such as its most populous city of Portland. The capital is Augusta.

The Devonian is a geologic period and system of the Paleozoic, spanning 60 million years from the end of the Silurian, 419.2 million years ago (Mya), to the beginning of the Carboniferous, 358.9 Mya. It is named after Devon, England, where rocks from this period were first studied.

See also

Paleontology in Maine

Paleontology in Maine refers to paleontological research occurring within or conducted by people from the U.S. state of Maine. The fossil record of Maine is very sparse. Maine came into existence during the Ordovician as other ancient land masses accreted onto North America. At the time Maine was covered by a sea inhabited by a menagerie of invertebrates which included graptolites. During the Devonian, geologic uplift raised Maine above sea level. Early land plants flourished in the terrestrial environments. There is a gap in the local rock record spanning the remainder of the Paleozoic, the Mesozoic, and the Tertiary period of the Cenozoic era. During the Ice Age, Maine was varyingly covered by glaciers or seawater. The Devonian Pertica plant, Pertica quadrifaria, is the Maine state fossil.

Related Research Articles

<i>Euclastes</i> genus of turtles

Euclastes is an extinct genus of sea turtles that survived the Cretaceous–Paleogene mass extinction. The genus was first named by Edward Drinker Cope in 1867, and contains three species. E. hutchisoni, was named in 2003 but has since been reassigned to the genus Pacifichelys, while E. coahuilaensis named in 2009 was reassigned as Mexichelys coahuilaensis in 2010.

The Java Formation is a geologic formation in Pennsylvania. It preserves fossils dating back to the Devonian period.

The Chapman Sandstone is a geologic formation in Maine. It preserves fossils dating back to the Devonian period.

The Mapleton Sandstone is a geologic formation in Maine. It preserves fossils dating back to the Devonian period.

The Tarratine Formation is a geologic formation in Maine. It preserves fossils dating back to the Devonian period.

The Shin Brook Formation is a geologic formation in Maine. It preserves fossils dating back to the Ordovician period.

The Little East Lake Formation is a geologic formation in Maine. It preserves fossils dating back to the Ordovician period.

The Frenchville Formation is a geologic formation in Maine. It preserves fossils dating back to the Silurian period.

The Perham Formation is a geologic formation in Maine. It preserves fossils dating back to the Silurian period.

The Champlain Clay is a geologic formation in Maine. It preserves fossils.

The Wabaunsee Formation is a geologic formation in Kansas. It preserves fossils dating back to the Carboniferous period.

The Wellington Formation is a geologic formation in Kansas. It preserves fossils dating back to the Permian period.

The Washakie Formation is a geologic formation in Wyoming. It preserves fossils dating back to the Paleogene period.

The Weber Formation is a geologic formation in Colorado. It preserves fossils dating back to the Carboniferous period.

The Alamosa Formation is a geologic formation in Colorado. It preserves fossils.

References

  1. "Fossilworks: Gateway to the Paleobiology Database". fossilworks.org. Retrieved 1 December 2017.