A coastal plain is an area of flat, low-lying land adjacent to a seacoast and separated from the interior by other features. One of the world's longest coastal plains is located in western South America. The southeastern coastal plain of North America is notable for its species diversity. The Gulf Coastal Plain of North America extends northwards from the Gulf of Mexico along the Lower Mississippi River to the Ohio River, which is a distance of about 500 miles (about 800 km). During the Cretaceous age, the central area of the United States was covered by a shallow sea, which disappeared as the land rose. Large fossilized aquatic birds called Hesperornis and Ichthyornis, found in western Kansas, indicate that the shallow sea was rife with fish. The coastal plain lying alongside the lower Mississippi River may be associated with a shallow sea which had existed 100 million years ago. South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. ... North American redirects here. ... For other uses, see Species (disambiguation). ... The Gulf Coastal Plain extends from the Florida Parishes of Louisiana over most of Mississippi, some of western Tennessee and Kentucky, the southwestern 2/3 of Alabama, and the western panhandle of Florida. ... Gulf of Mexico in 3D perspective. ... For the river in Canada, see Mississippi River (Ontario). ... View of Pittsburgh, the largest metropolitan area on the Ohio River, where the Allegheny River (left) and the Monongahela River (right) join at Point State Park to form the Ohio River Cincinnati, Ohio is a well known city along the Ohio River, historically known for its riverboats. ... // The Cretaceous Period is one of the major divisions of the geologic timescale, reaching from the end of the Jurassic Period (i. ... This article is about the U.S. state. ...

Some well-known coastal plains

• The Illawarra Plains, New South Wales, Australia
• The Swan Coastal Plain, Western Australia
• The Israeli Coastal Plain
• The Atlantic Coastal Plain, United States
• The Oxnard Plain, California, United States, near Los Angeles

The Illawarra Plains are a group of broad coastal plains in south-west Australia. ... NSW redirects here. ... Swan Coastal Plain Swan Coast Plain from Darling Scarp The geographic feature that lies directly west of the Darling Scarp, and which contains the Swan River as it travels west to the Indian Ocean. ... Slogan or Nickname: Wildflower State or the Golden State Other Australian states and territories Capital Perth Government Constitutional monarchy Governor Ken Michael Premier Alan Carpenter (ALP) Federal representation  - House seats 15  - Senate seats 12 Gross State Product (2005-06)  - Product ($m)  $107,910 (4th)  - Product per capita  $53,134/person... The Israeli Coastal Plain (Hebrew: , Mishor HaHof) is a name to the flat and low-lying narrow strip around the Mediterranean Sea. ... The Atlantic Coastal Plain is the rather flat stretch of land that borders the Atlantic Ocean (including the Gulf of Mexico). ... The Oxnard Plain The Oxnard Plain is a large coastal plain in southwest Ventura County, California bounded by the Santa Monica Mountains and the Santa Susana Mountains to the east, the Topatopa Mountains to the north and the Pacific Ocean to the south and west. ... This article is about the U.S. state. ... Flag Seal Nickname: City of Angels Location Location within Los Angeles County in the state of California Coordinates , Government State County California Los Angeles County Mayor Antonio Villaraigosa (D) Geographical characteristics Area     City 1,290. ...

See also

• Coastal prairie
• Field
• Flooded grasslands and savannas
• Flood-meadow
• Grassland
• Meadow
• Pasture
• Plain
• Prairie
• Rangeland
• Savanna
• Steppe
• Water-meadow
• Wet meadow
• Veld