{ {{Portal maintenance status|date
IntroductionSelected article on prehistoric North America
The Columbian mammoth (Mammuthus columbi) was a species of
mammoth that inhabited North America as far north as the northern United States and as far south as Costa Rica during the
Pleistocene epoch. The Columbian mammoth evolved from the
steppe mammoth, which entered North America from Asia about 1.5 million years ago. The
pygmy mammoths of the
Channel Islands of California evolved from Columbian mammoths. The closest
extant relative of the Columbian and other mammoths is the
Asian elephant.
Reaching 4 m (13 ft) at the shoulders and 8–10 tonnes (18,000–22,000 lb) in weight, the Columbian mammoth was one of the largest species of mammoth. It most likely used its tusks and trunk like modern elephants—for manipulating objects, fighting, and foraging. The Columbian mammoth preferred open areas, such as parkland landscapes, and fed on sedge, grass, and other plants. Genetic evidence suggests that they interbred with wooly mammoths. Before they went extinct, Columbian mammoths coexisted in North America for a few thousand years with Palaeoamericans, who hunted them for food, used their bones for making tools, and depicted them in ancient art. Columbian mammoth remains have been found in association with Clovis culture artefacts; these remains may have stemmed either from hunting or from scavenging. The Columbian mammoth disappeared at the end of the Pleistocene around 11,000 years ago, most likely as a result of habitat loss caused by climate change, hunting by humans, or a combination of both. ( see more...) Need help?Do you have a question about Abyssal/Prehistory of North America that you can't find the answer to? Consider asking it at the Wikipedia reference desk. Selected article on the prehistory of North America in science, culture and economics
Petrified Forest National Park is a
United States national park in
Navajo and
Apache counties in northeastern
Arizona. Named for its large deposits of
petrified wood, the park covers about 146 square miles (380 km2), encompassing semi-desert shrub
steppe as well as highly eroded and colorful
badlands. The site, the northern part of which extends into the
Painted Desert, was declared a
national monument in 1906 and a national park in 1962.
The Petrified Forest is known for its fossils, especially fallen trees that lived in the Late Triassic, about 225 million years ago. The sediments containing the fossil logs are part of the widespread and colorful Chinle Formation, from which the Painted Desert gets its name. Beginning about 60 million years ago, the Colorado Plateau, of which the park is part, was pushed upward by tectonic forces and exposed to increased erosion. All of the park's rock layers above the Chinle, except geologically recent ones found in parts of the park, have been removed by wind and water. In addition to petrified logs, fossils found in the park have included Late Triassic ferns, cycads, ginkgoes, and many other plants as well as fauna including giant reptiles called phytosaurs, large amphibians, and early dinosaurs. Paleontologists have been unearthing and studying the park's fossils since the early 20th century. ( see more...) Did you know?![]()
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Quality ContentFeatured prehistory of North America articles -
Acrocanthosaurus -
Albertosaurus -
Allosaurus -
Bone Sharps, Cowboys, and Thunder Lizards -
Bone Wars -
Chicxulub crater -
Columbian mammoth -
Edward Drinker Cope -
Cretaceous–Paleogene extinction event -
Daspletosaurus -
Deinonychus -
Deinosuchus -
Dinosaur -
Diplodocus -
Ediacara biota -
Edmontosaurus -
Gorgosaurus -
Lambeosaurus -
Parasaurolophus -
Petrified Forest National Park -
Stegosaurus -
Styracosaurus -
Thescelosaurus -
Triceratops -
Tyrannosaurus -
Woolly mammoth Good prehistory of North America articles -
?Oryzomys pliocaenicus -
Aetosaur -
Archaeomarasmius -
Chitinozoan -
Cloudinid -
Coal ball -
Dimetrodon -
Stephen Jay Gould -
History of paleontology -
Kirtlandian -
Macabeemyrma -
Megalodon -
Ornatifilum -
Othnielosaurus -
Protomycena -
Pteranodon -
Pterosaur -
Saint Croix macaw -
Small shelly fauna -
Smilodon -
Temnospondyli -
Tiktaalik -
Waptia SubcategoriesThings you can doDesired articles, sorted by how frequently linked to:
Related contentAssociated WikimediaThe following Wikimedia Foundation sister projects provide more on this subject:
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{ {{Portal maintenance status|date
IntroductionSelected article on prehistoric North America
The Columbian mammoth (Mammuthus columbi) was a species of
mammoth that inhabited North America as far north as the northern United States and as far south as Costa Rica during the
Pleistocene epoch. The Columbian mammoth evolved from the
steppe mammoth, which entered North America from Asia about 1.5 million years ago. The
pygmy mammoths of the
Channel Islands of California evolved from Columbian mammoths. The closest
extant relative of the Columbian and other mammoths is the
Asian elephant.
Reaching 4 m (13 ft) at the shoulders and 8–10 tonnes (18,000–22,000 lb) in weight, the Columbian mammoth was one of the largest species of mammoth. It most likely used its tusks and trunk like modern elephants—for manipulating objects, fighting, and foraging. The Columbian mammoth preferred open areas, such as parkland landscapes, and fed on sedge, grass, and other plants. Genetic evidence suggests that they interbred with wooly mammoths. Before they went extinct, Columbian mammoths coexisted in North America for a few thousand years with Palaeoamericans, who hunted them for food, used their bones for making tools, and depicted them in ancient art. Columbian mammoth remains have been found in association with Clovis culture artefacts; these remains may have stemmed either from hunting or from scavenging. The Columbian mammoth disappeared at the end of the Pleistocene around 11,000 years ago, most likely as a result of habitat loss caused by climate change, hunting by humans, or a combination of both. ( see more...) Need help?Do you have a question about Abyssal/Prehistory of North America that you can't find the answer to? Consider asking it at the Wikipedia reference desk. Selected article on the prehistory of North America in science, culture and economics
Petrified Forest National Park is a
United States national park in
Navajo and
Apache counties in northeastern
Arizona. Named for its large deposits of
petrified wood, the park covers about 146 square miles (380 km2), encompassing semi-desert shrub
steppe as well as highly eroded and colorful
badlands. The site, the northern part of which extends into the
Painted Desert, was declared a
national monument in 1906 and a national park in 1962.
The Petrified Forest is known for its fossils, especially fallen trees that lived in the Late Triassic, about 225 million years ago. The sediments containing the fossil logs are part of the widespread and colorful Chinle Formation, from which the Painted Desert gets its name. Beginning about 60 million years ago, the Colorado Plateau, of which the park is part, was pushed upward by tectonic forces and exposed to increased erosion. All of the park's rock layers above the Chinle, except geologically recent ones found in parts of the park, have been removed by wind and water. In addition to petrified logs, fossils found in the park have included Late Triassic ferns, cycads, ginkgoes, and many other plants as well as fauna including giant reptiles called phytosaurs, large amphibians, and early dinosaurs. Paleontologists have been unearthing and studying the park's fossils since the early 20th century. ( see more...) Did you know?![]()
![]()
Selected image
Quality ContentFeatured prehistory of North America articles -
Acrocanthosaurus -
Albertosaurus -
Allosaurus -
Bone Sharps, Cowboys, and Thunder Lizards -
Bone Wars -
Chicxulub crater -
Columbian mammoth -
Edward Drinker Cope -
Cretaceous–Paleogene extinction event -
Daspletosaurus -
Deinonychus -
Deinosuchus -
Dinosaur -
Diplodocus -
Ediacara biota -
Edmontosaurus -
Gorgosaurus -
Lambeosaurus -
Parasaurolophus -
Petrified Forest National Park -
Stegosaurus -
Styracosaurus -
Thescelosaurus -
Triceratops -
Tyrannosaurus -
Woolly mammoth Good prehistory of North America articles -
?Oryzomys pliocaenicus -
Aetosaur -
Archaeomarasmius -
Chitinozoan -
Cloudinid -
Coal ball -
Dimetrodon -
Stephen Jay Gould -
History of paleontology -
Kirtlandian -
Macabeemyrma -
Megalodon -
Ornatifilum -
Othnielosaurus -
Protomycena -
Pteranodon -
Pterosaur -
Saint Croix macaw -
Small shelly fauna -
Smilodon -
Temnospondyli -
Tiktaalik -
Waptia SubcategoriesThings you can doDesired articles, sorted by how frequently linked to:
Related contentAssociated WikimediaThe following Wikimedia Foundation sister projects provide more on this subject:
|