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Bog Lemming
''Synaptomys'' is a genus of North American lemmings. These animals live in wet forested and open areas. They are small, cylindrical rodents with large heads and short ears, legs, and tails. They eat green vegetation such as grasses and sedges. They are often found in colonies. Systematics The genus ''Synaptomys'' comprises two extant species and 10 extinct species. Extant species * Northern bog lemming (''S. borealis'' Richardson, 1828) * Southern bog lemming The southern bog lemming (''Synaptomys cooperi'') is a small North American lemming. Its range overlaps with the other species in genus ''Synaptomys'', the northern bog lemming, in southeastern Canada, but extends farther south. Description Sou ... (''S. cooperi'' Baird 1858) Extinct species * Florida bog lemming (''S. australis'' Simpson 1928) * Bunker's bog lemming (''S. bunkeri'' Hibbard 1939) * Morgan's bog lemming (''S. morgani'' Martin et al. 2003) A number of other fossil species have been included here b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pliocene
The Pliocene ( ; also Pleiocene) is the epoch in the geologic time scale that extends from 5.333 million to 2.58See the 2014 version of the ICS geologic time scale million years ago. It is the second and most recent epoch of the Period in the Cenozoic Era. The Pliocene follows the Miocene Epoch and is followed by the Pleistocene Epoch. Prior to the 2009 revision of the geologic time scale, which placed the fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Bog Lemming
The southern bog lemming (''Synaptomys cooperi'') is a small North American lemming. Its range overlaps with the other species in genus ''Synaptomys'', the northern bog lemming, in southeastern Canada, but extends farther south. Description Southern bog lemmings are covered with thick, brownish fur on their backs that ranges in color from reddish to dark brown and have a grizzled appearance. The belly is silver-gray. The shallow-grooved upper incisors and a relatively shorter tail distinguish this species from other rodents. They have relatively large heads and small eyes. The ears barely show through puffy head fur. Southern bog lemmings have four toes and one small, nailed thumb on the forefeet and five toes on the hind feet. Females have six teats, which distinguishes this species from its closest relative, northern bog lemmings, which have eight. They have a large head, short legs, and a short tail which is lighter underneath. Their upper incisors are grooved. They are long ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spencer Fullerton Baird
Spencer Fullerton Baird (; February 3, 1823 – August 19, 1887) was an American naturalist, ornithologist, ichthyologist, herpetologist, and museum curator. Baird was the first curator to be named at the Smithsonian Institution. He eventually served as assistant Secretary of the Smithsonian from 1850 to 1878, and as Secretary from 1878 until 1887. He was dedicated to expanding the natural history collections of the Smithsonian which he increased from 6,000 specimens in 1850 to over 2 million by the time of his death. He published over 1,000 works during his lifetime. Early life and education Spencer Fullerton Baird was born in Reading, Pennsylvania in 1823. His mother was a member of the prominent Philadelphia Biddle family; he was a nephew of Speaker of the Pennsylvania Senate Charles B. Penrose and a first cousin, once removed, of U.S. Senator Boies Penrose and his distinguished brothers, Richard, Spencer, and Charles. He became a self-trained naturalist as a young man, le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synaptomys Cooperi
The southern bog lemming (''Synaptomys cooperi'') is a small North American lemming. Its range overlaps with the other species in genus ''Synaptomys'', the northern bog lemming, in southeastern Canada, but extends farther south. Description Southern bog lemmings are covered with thick, brownish fur on their backs that ranges in color from reddish to dark brown and have a grizzled appearance. The belly is silver-gray. The shallow-grooved upper incisors and a relatively shorter tail distinguish this species from other rodents. They have relatively large heads and small eyes. The ears barely show through puffy head fur. Southern bog lemmings have four toes and one small, nailed thumb on the forefeet and five toes on the hind feet. Females have six teats, which distinguishes this species from its closest relative, northern bog lemmings, which have eight. They have a large head, short legs, and a short tail which is lighter underneath. Their upper incisors are grooved. They are lon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synaptomys Borealis
The northern bog lemming (''Synaptomys borealis'') is a small North American lemming. It is one of two species in the genus ''Synaptomys'', the other being the southern bog lemming. Description They have cylindrical bodies covered with long grey or brown fur with pale grey underparts. A patch of rust-coloured hair is seen at the base of the ears. They have small eyes, a hairy snout, and a short tail. They have 16 teeth and their upper incisors are grooved. They are 13 cm long with a 2-cm tail, and weigh about 30 g. Distribution and habitat These animals are found in wet northern forests, bogs, tundra, and meadows in Canada, Alaska, northern Washington, Minnesota, and New England. They feed on grasses, sedges, other green vegetation, and mosses, as well as snails and slugs. Their droppings are green. Predators include owls, hawks, mustelid The Mustelidae (; from Latin ''mustela'', weasel) are a family of carnivorous mammals, including weasels, badgers, otters, fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synaptomys Australis
''Synaptomys australis'', the Florida bog lemming, is an extinct species of bog lemming that occurred in Florida during the Late Pleistocene. Taxonomy Although the bog lemmings are not indigenous to Florida at the present time, remains are known there from the Pleistocene, indicating the range of these normally cold-adapted rodents extended further south during glaciation events. The Florida bog lemming was described from a lower jaw collected from Pleistocene deposits in 1928. Its taxonomic status as a full species has been questioned however, with some researchers considering it a prehistoric race of the southern bog lemming The southern bog lemming (''Synaptomys cooperi'') is a small North American lemming. Its range overlaps with the other species in genus ''Synaptomys'', the northern bog lemming, in southeastern Canada, but extends farther south. Description Sou .... Description The Florida bog lemming was slightly larger than the living southern bog lemming. It went e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Plate, North American Tectonic Plate, Greenland is included as a part of North America geographically. North America covers an area of about , about 16.5% of Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the list of continents and continental subregions by population, fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in List of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's population. In Americas (terminology)#Human ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lemming
A lemming is a small rodent, usually found in or near the Arctic in tundra biomes. Lemmings form the subfamily Arvicolinae (also known as Microtinae) together with voles and muskrats, which form part of the superfamily Muroidea, which also includes rats, mice, hamsters, and gerbils. In popular culture, a longstanding myth holds that they exhibit herd mentality and jump off cliffs, committing mass suicide. Description and habitat Lemmings measure around in length and weigh around . Lemmings are quite rounded in shape, with brown and black, long, soft fur. They have a very short tail, a stubby, hairy snout, short legs, and small ears. They have a flattened claw on the first digit of their front feet, which helps them to dig in the snow. They are herbivorous, feeding mostly on mosses and grasses. They also forage through the snow surface to find berries, leaves, shoots, roots, bulbs, and lichens. Lemmings choose their preferred dietary vegetation disproportionately to its oc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Bog Lemming
The northern bog lemming (''Synaptomys borealis'') is a small North American lemming. It is one of two species in the genus ''Synaptomys'', the other being the southern bog lemming. Description They have cylindrical bodies covered with long grey or brown fur with pale grey underparts. A patch of rust-coloured hair is seen at the base of the ears. They have small eyes, a hairy snout, and a short tail. They have 16 teeth and their upper incisors are grooved. They are 13 cm long with a 2-cm tail, and weigh about 30 g. Distribution and habitat These animals are found in wet northern forests, bogs, tundra, and meadows in Canada, Alaska, northern Washington, Minnesota, and New England. They feed on grasses, sedges, other green vegetation, and mosses, as well as snails and slugs. Their droppings are green. Predators include owls, hawks, mustelid The Mustelidae (; from Latin ''mustela'', weasel) are a family of carnivorous mammals, including weasels, badgers, otters, f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Florida Bog Lemming
''Synaptomys australis'', the Florida bog lemming, is an extinct species of bog lemming that occurred in Florida during the Late Pleistocene. Taxonomy Although the bog lemmings are not indigenous to Florida at the present time, remains are known there from the Pleistocene, indicating the range of these normally cold-adapted rodents extended further south during glaciation events. The Florida bog lemming was described from a lower jaw collected from Pleistocene deposits in 1928. Its taxonomic status as a full species has been questioned however, with some researchers considering it a prehistoric race of the southern bog lemming The southern bog lemming (''Synaptomys cooperi'') is a small North American lemming. Its range overlaps with the other species in genus ''Synaptomys'', the northern bog lemming, in southeastern Canada, but extends farther south. Description Sou .... Description The Florida bog lemming was slightly larger than the living southern bog lemming. It went e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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