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Carex haydeniana

Carex haydeniana is a species of sedge known by the common name cloud sedge. It is native to western North America from British Columbia and Alberta south to California and New Mexico. It grows in moist, rocky areas in subalpine and alpine climates.

Carex luzulina

This sedge is native to western North America from British Columbia to California to Wyoming, where it grows in wet habitat such as bogs and mountain meadows.

Valdoraptor

Valdoraptor is a genus of theropod dinosaur from the Early Cretaceous. Its fossils were found in England. It is known only from bones of the feet. The holotype, BMNH R2559, was found near Cuckfield in layers of the Tunbridge Wells Sand Formation ...

Angelosaurus

Angelosaurus was a pelycosaur of reptile. The type species, Angelosaurus dolani is known from a partial skull from the Middle San Angelo Formation, Knox County, Texas, USA dating from the Kungurian. The specimen represented an individual that was ...

Brachyprosopus

Brachyprosopus is an extinct genus of dicynodont therapsid from the middle Permian of the Karoo Basin, South Africa. Chelydontops Cluver, 1975, based on a skull from the Karoo Basin of South Africa, is a junior synonym.

Caseoides

Caseoides is an extinct genus of large pelycosaur synapsids that lived in the Kungurian Age. It was about 3 metres long, and like many other caseids, it was herbivorous and aquatic. It weighed between 150 to 200 kilograms. Its fossils were found ...

Dimacrodon

Dimacrodon is an extinct genus of non-mammalian synapsid from the latest Early Permian San Angelo Formation of Texas. It is distinguished by toothless, possibly beaked jaw tips, large lower canines and a thin bony crest on top of its head. Previo ...

Gorgodon

Gorgodon is an extinct genus of basal synapsids. The genus is monotypic, known only from the type species Gorgodon minutus from the Early Permian of the southwestern United States. The only known remains of Gorgodon are two fossils consisting of ...

Knoxosaurus

Knoxosaurus is an extinct genus of non-mammalian synapsids containing the species Knoxosaurus niteckii that existed approximately 279.5 to 268 million years ago. It was named by American paleontologist Everett C. Olson in 1962 on the basis of fra ...

Slaugenhopia

Slaugenhopia is an extinct genus of dvinosaurian temnospondyl within the family Tupilakosauridae. Fossils have been found from the Early Permian San Angelo Formation in Texas. The type and only species, S. texensis, was named in 1962. It may be c ...

Steppesaurus

Steppesaurus is an extinct genus of basal Eupelycosauria belonging to the Sphenacodontidae, related to Dimetrodon and Sphenacodon, from the Permian San Angelo Formation of Texas. A maxilla and dentary, holotype FMNH UR 148, were at the Pease Rive ...

Cheloniidae

Cheloniidae is a family of typically large marine turtles that are characterised by their common traits such as, having a flat streamlined wide and rounded shell and almost paddle-like flippers for their forelimbs. The six species that make up th ...

Colubridae

Colubridae is a family of snakes. With 249 genera, it is the largest snake family. The earliest species of the family date back to the Oligocene epoch. Colubrid snakes are found on every continent except Antarctica.

Colubrinae

The Colubrinae are a subfamily of the family Colubridae of snakes. It includes numerous genera, and although taxonomic sources often disagree on the exact number, The Reptile Database lists 717 species in 92 genera as of September 2019. It is the ...

Iguanidae

Family Hoplocercidae Family Dactyloidae Family Corytophanidae Family Opluridae Family Leiosauridae Family Liolaemidae Family Iguanidae Family Leiocephalidae Family Tropiduridae Family Polychrotidae Family Crotaphytidae Family Phrynosomatidae

Lacertidae

The Lacertidae are the family of the wall lizards, true lizards, or sometimes simply lacertas, which are native to Europe, Africa, and Asia. The group includes the genus Lacerta, which contains some of the most commonly seen lizard species in Eur ...

Lacertoidea

The Lacertoidea is a group of lizards that includes the Lacertidae, Teiidae, Gymnophthalmidae, and the burrowing Amphisbaenia. Studies of anatomy have traditionally grouped the lacertoids with skinks; however, more recent studies focusing on DNA ...

Squamata

Squamata is the largest order of reptiles, comprising lizards, snakes and amphisbaenians, which are collectively known as squamates or scaled reptiles. With over 10.000 species, it is also the second-largest order of extant vertebrates, after the ...

Viperidae

The Viperidae are a family of venomous snakes found in most parts of the world, with the exception of Antarctica, Australia, Hawaii, Madagascar, New Zealand, various other isolated islands, and north of the Arctic Circle. All have relatively long ...

Viperinae

Common names: pitless vipers, true vipers, Old World vipers, true adders. The Viperinae, or viperines, are a subfamily of venomous vipers endemic to Europe, Asia and Africa. They are distinguished by their lack of the heat-sensing pit organs that ...

Black-tailed prairie dog

The black-tailed prairie dog is a rodent of the family Sciuridae found in the Great Plains of North America from about the United States-Canada border to the United States-Mexico border. Unlike some other prairie dogs, these animals do not truly ...

Bushy-tailed woodrat

The bushy-tailed woodrat, or packrat is a species of rodent in the family Cricetidae found in Canada and the United States. Its natural habitats are boreal forests, temperate forests, dry savanna, temperate shrubland, and temperate grassland. The ...

Columbian ground squirrel

The Columbian ground squirrel is a species of rodent common in certain regions of Canada and the northwestern United States. It is the second largest member of the genus Urocitellus, which is part of the tribe Marmotini, along with marmots, chipm ...

Sigmodon

A cotton rat is any member of the rodent genus Sigmodon. Cotton rats have small ears and dark coats, and are found in North and South America. Members of this genus are distributed in the Southwestern USA, Mexico, Central America and South Americ ...

Bonapartes gull

Bonapartes gull is a member of the gull family Laridae found mainly in northern North America. At 28 to 38 cm in length, it is one of the smallest species of gull. Its plumage is mainly white with grey upperparts. During breeding season, Bonapart ...

Pack rat

A pack rat or packrat, also called a woodrat, can be any of the species in the rodent genus Neotoma. Pack rats have a rat-like appearance with long tails, large ears and large black eyes. Pack rats are noticeably larger than deer mice, harvest mi ...

Piping plover

The piping plover is a small sand-colored, sparrow-sized shorebird that nests and feeds along coastal sand and gravel beaches in North America. The adult has yellow-orange-red legs, a black band across the forehead from eye to eye, and a black st ...

Wilsons plover

Wilsons plover is a small bird of the family Charadriidae. Wilsons plover is a coastal wader which breeds on both coasts of the Americas from the equator northwards. Its range extends north to include much of the U.S. eastern seaboard, and the Pa ...

Antilocapra

The pronghorn is a species of artiodactyl mammal indigenous to interior western and central North America. Though not an antelope, it is often known colloquially in North America as the American antelope, prong buck, pronghorn antelope, prairie a ...

Wilsons snipe

Wilsons snipe is a small, stocky shorebird. The genus name gallinago is New Latin for a woodcock or snipe from Latin gallina, "hen" and the suffix -ago, "resembling". The specific delicata is Latin for "dainty". This species was considered to be ...

Western gray squirrel

The western gray squirrel is an arboreal rodent found along the western coast of the United States and Mexico. It is a tree squirrel. In some places, this species has also been known as the silver-gray squirrel, the California gray squirrel, the ...

Tundra swan

The tundra swan is a small Holarctic swan. The two taxa within it are usually regarded as conspecific, but are also sometimes split into two species: Bewicks swan of the Palaearctic and the whistling swan proper of the Nearctic. Birds from easter ...

Meadow vole

The meadow vole, sometimes called the field mouse or meadow mouse, is a North American vole found across Canada, Alaska and the northern United States. Its range extends farther south along the Atlantic coast. One subspecies, the Florida salt mar ...

Eastern woodrat

The eastern woodrat, also known as the Florida woodrat or bush rat is a pack rat native to the central and Eastern United States. It constructs large dens that may serve as nests for many generations and stores food in outlying caches for the win ...

Cambarellus

Cambarellus is a genus of small freshwater crayfish in the family Cambaridae. The 19 species are found in Mexico and the Gulf States of the United States. Among the Mexican species, C. areolatus, C. patzcuarensis, and C. prolixus are considered s ...

Procambarus

Procambarus is a genus of crayfish in the family Cambaridae, all native to North and Central America. It includes a number of troglobitic species, and the marbled crayfish, which is parthenogenetic. Originally described as a subgenus for four spe ...

Aluterus scriptus

Aluterus scriptus, commonly known as scrawled filefish, broomtail filefish or scribbled leatherjacket, is a marine fish belonging to the family Monacanthidae.

Holocentrus adscensionis

Holocentrus adscensionis is a squirrelfish of the family Holocentridae found in the Atlantic Ocean. Its range extends from North Carolina, USA to Brazil and throughout the Caribbean Sea in the Western Atlantic and from Gabon to Ascension Island i ...

Moma alpium

D. alpium Osb. = orion Esp. 2c. Forewing bluegreen, the costa and both folds white: stigmata and lines black; outer hue with brown outer border; hindwing fuscous, with black and white marks at anal angle. - In the form murrhina Grues. 2c, from We ...

Monacanthus chinensis

Monacanthus chinensis, commonly known as the fan-bellied leatherjacket or fantail leatherjacket, is a species of filefish native to the western Pacific Ocean and the eastern Indian Ocean where it is found on reefs and soft sediments at shallow de ...

Albertosaurus

Albertosaurus is a genus of tyrannosaurid theropod dinosaurs that lived in western North America during the Late Cretaceous Period, about 70 million years ago. The type species, A. sarcophagus, was apparently restricted in range to the modern-day ...

Andrewsarchus

Andrewsarchus is an extinct genus of mammal that lived during the middle Eocene epoch in what is now Inner Mongolia, China. Only one species is usually recognized, A. mongoliensis, known from a single skull of great size discovered in 1923 during ...

Ankylosauria

Ankylosauria is a group of mainly herbivorous dinosaurs of the order Ornithischia. It includes the great majority of dinosaurs with armor in the form of bony osteoderms. Ankylosaurs were bulky quadrupeds, with short, powerful limbs. They are know ...

Apidium

The genus Apidium is that of at least three extinct primates living in the early Oligocene, roughly 30 million years ago. Apidium fossils are common in the Fayoum deposits of Egypt. Fossils of the earlier species, Apidium moustafai, are rare; fos ...

Asiatosaurus

Asiatosaurus was a genus of herbivorous sauropod dinosaur which lived during the early Cretaceous. Its fossils have been found in China and Mongolia. Its type species is known only from teeth, making it difficult to rely on information until more ...

Embolotherium

Embolotherium is an extinct genus of brontothere that lived in Mongolia during the late Eocene epoch. It is most easily recognized by a large bony protuberance emanating from the anterior of the skull. This resembles a battering ram, hence the na ...

Ornitholestes

Ornitholestes is a small theropod dinosaur of the late Jurassic of Western Laurasia. To date, Ornitholestes is known only from a single partial skeleton with a badly crushed skull found at the Bone Cabin Quarry near Medicine Bow, Wyoming, in 1900 ...

Oviraptor

Oviraptor is a genus of small Mongolian theropod dinosaurs, first discovered by technician George Olsen in an expedition led by Roy Chapman Andrews, and first described by Henry Fairfield Osborn, in 1924. Its name is Latin for egg taker or "egg s ...

Pentaceratops

Pentaceratops is a genus of herbivorous ceratopsid dinosaur from the late Cretaceous Period of what is now North America. Pentaceratops fossils were first discovered in 1921. The genus was named in 1923 when its type species Pentaceratops sternbe ...

Pliohyrax

Pliohyrax, a genus believed extinct since the Pliocene, is one of the larger hyracoids. It grew to sizes greatly exceeding those of any living hyrax, though it was by no means the largest member of this family. Fossils of this Miocene, scansorial ...