The Western Interior Seaway was a large inland sea that split the continent of North America into two landmasses for 34 million years. The ancient sea, which existed from the early Late Cretaceous to the earliest Paleocene, connected the Gulf of Mexico to the Arctic Ocean. The two land masses it created were Laramidia to the west and Appalachia to the east. At its largest extent, it was 2,500 feet (760 m) deep, 600 miles (970 km) wide and over 2,000 miles (3,200 km) long.
The Pensacola Mountains are a large group of mountain ranges and peaks that extend 280 nautical miles in a northeast–southwest direction in the Transantarctic Mountains System, Queen Elizabeth Land region of Antarctica. They comprise the Argentina Range, Forrestal Range, Dufek Massif, Cordiner Peaks, Neptune Range, Patuxent Range, Rambo Nunataks and Pecora Escarpment. These mountain units lie astride the extensive Foundation Ice Stream and Support Force Glacier which drain northward to the Ronne Ice Shelf.
The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone, and limestone and is light gray, greenish gray, or red. Most of the fossils occur in the green siltstone beds and lower sandstones, relics of the rivers and floodplains of the Jurassic period.
Shackleton Glacier is a major Antarctic glacier, over 60 nautical miles long and from 5 to 10 nautical miles wide, descending from the Antarctic Plateau from the vicinity of Roberts Massif and flowing north through the Queen Maud Mountains to enter the Ross Ice Shelf between Mount Speed and Waldron Spurs. Discovered by the United States Antarctic Service (USAS) (1939–41) and named by the Advisory Committee on Antarctic Names (US-ACAN) for Sir Ernest Shackleton, British Antarctic explorer.
The Prince Olav Mountains is a mountain group in the Queen Maud Mountains in Antarctica stretching from Shackleton Glacier to Liv Glacier at the head of the Ross Ice Shelf.
The following lists events that happened during 1929 in South Africa.
Belgica Mountains is an isolated chain of mountains about 10 miles (16 km) long, standing 60 miles (97 km) east-southeast of the Sor Rondane Mountains in Queen Maud Land, in the Antarctic. The chain was discovered by the Belgian Antarctic Expedition (1957-1958) under Gaston de Gerlache, and named after the ship Belgica, commanded by his father, Lt. Adrien de Gerlache, leader of the Belgian Antarctic Expedition of 1897–99.
Stokesosaurus is a genus of small, carnivorous early tyrannosauroid theropod dinosaurs from the late Jurassic period of Utah, United States and Guimarota, Portugal.
The Trans-Pecos, as originally defined in 1887 by the Texas geologist Robert T. Hill, is the distinct portion of Texas that lies west of the Pecos River. The term is considered synonymous with Far West Texas, a subdivision of West Texas. The Trans-Pecos is part of the Chihuahuan Desert, the largest desert in North America. It is the most mountainous and arid portion of the state, and most of its vast area is sparsely populated. Among the nine counties in the region are the five largest counties by area in Texas and eight of the eleven largest in the state. The area is known for the natural environment of the Big Bend and the gorge of the Rio Grande, part of which has been designated a National Wild and Scenic Rivers System. With the notable exceptions of Big Bend Ranch State Park, Big Bend National Park and the Guadalupe Mountains National Park, the vast majority of the Trans-Pecos region consists of privately owned ranchland. However, most of the region's population reside in the El Paso metropolitan area. Besides El Paso and its metropolitan area, the major cities are Pecos (12,916), Fort Stockton (8,466), and Alpine (6,035). All other settlements have under 5,000 people.
Polycotylidae is a family of plesiosaurs from the Cretaceous, a sister group to Leptocleididae. They are known as false pliosaurs. Polycotylids first appeared during the Albian stage of the Early Cretaceous, before becoming abundant and widespread during the early Late Cretaceous. Several species survived into the final stage of the Cretaceous, the early Maastrichtian around 72 million years ago. The possible latest surviving member Rarosaurus from the late Maastrichtian is more likely a crocodylomorph.
Dermodactylus was a genus of pterodactyloid pterosaur from the Kimmeridgian-Tithonian-age Upper Jurassic Morrison Formation of Wyoming, United States. It is based on a single partial bone, from the hand.
Convoy Range is a broad range in Antarctica. It is south of the Kirkwood Range and north of the Clare Range.
Pangaea or Pangea was a supercontinent that existed during the late Paleozoic and early Mesozoic eras. It assembled from the earlier continental units of Gondwana, Euramerica and Siberia during the Carboniferous approximately 335 million years ago, and began to break apart about 200 million years ago, at the end of the Triassic and beginning of the Jurassic. Pangaea was C-shaped, with the bulk of its mass stretching between Earth's northern and southern polar regions and surrounded by the superocean Panthalassa and the Paleo-Tethys and subsequent Tethys Oceans. Pangaea is the most recent supercontinent to have existed and the first to be reconstructed by geologists.
The Gulf of Mexico is an ocean basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States; on the southwest and south by the Mexican states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán, and Quintana Roo; and on the southeast by Cuba. The Southern U.S. states of Texas, Louisiana, Mississippi, Alabama, and Florida, which border the gulf on the north, are often referred to as the "Third Coast" of the United States.
The Iberian plate is a microplate typically grouped with the Eurasian plate that includes the microcontinent Iberia, Corsica, Sardinia, the Balearic Islands, the Briançonnais zone of the Penninic nappes of the Alps, and the portion of Morocco north of the High Atlas Mountains. The Iberian plate is a part of the Eurasian plate.
The geology of Russia, the world's largest country, which extends over much of northern Eurasia, consists of several stable cratons and sedimentary platforms bounded by orogenic (mountain) belts.
Ramsey Glacier is a glacier about 45 nautical miles long in Antarctica. It originates in the Bush Mountains near the edge of the polar plateau and flows north through the Queen Maud Mountains of Antarctica to the Ross Ice Shelf eastward of Den Hartog Peak.
Zavera Snowfield is the glacier extending 18 kilometres (11 mi) in a north-south direction and 16 kilometres (9.9 mi) in an east-west direction on southern Trinity Peninsula in Graham Land, Antarctica. It is located in the northeast foothills of Detroit Plateau, south of Diplock Glacier, north of Mount Wild and northeast of Kopito Ridge. It drains into Prince Gustav Channel in Weddell Sea. The glacier is named after the Bulgarian liberation uprising of ‘Velchova Zavera’ in 1835.
The Malone Formation is a geologic formation in Texas. It preserves fossils dating back to the Jurassic period.
ReBecca Hunt-Foster is an American paleontologist. She has worked with dinosaur remains from the Late Jurassic to Late Cretaceous of the Colorado Plateau, Rocky Mountains, Southcentral, and the Southwestern United States of America. She described the dinosaur Arkansaurus fridayi and identified the first juvenile Torosaurus occurrences from Big Bend National Park in North America in 2008.
