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Mancallinae
Mancallinae is an extinct subfamily of prehistoric flightless alcids that lived on the Pacific coast of today's California and Mexico from the late Miocene epoch to the early Pleistocene (ranging from at least 7.4 million to 470,000 years ago). They are sometimes collectively referred to as Lucas auks after the scientist who described the first species, Frederic Augustus Lucas. Description They had evolved along somewhat similar lines as the great auk, their North Atlantic ecological counterpart, but their decidedly stubbier wings were in some aspects more convergent with penguins. Compared with the subarctic great auk, they were also smaller (''see also:'' Bergmann's Rule): ''Praemancalla'' species have been estimated to have weighed about 3 kg. Most ''Mancalla'' forms weighed somewhat less (about 2.4 kg), with ''M. milleri'' being a smaller (1.65 kg) and ''M. emlongi'' a much larger bird (3.8 kg) than the rest. The last species thus stood around 55–60&n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mancalla Californiensis
Mancallinae is an extinct subfamily of prehistoric flightless alcids that lived on the Pacific coast of today's California and Mexico from the late Miocene epoch to the early Pleistocene (ranging from at least 7.4 million to 470,000 years ago). They are sometimes collectively referred to as Lucas auks after the scientist who described the first species, Frederic Augustus Lucas. Description They had evolved along somewhat similar lines as the great auk, their North Atlantic ecological counterpart, but their decidedly stubbier wings were in some aspects more convergent with penguins. Compared with the subarctic great auk, they were also smaller (''see also:'' Bergmann's Rule): ''Praemancalla'' species have been estimated to have weighed about 3 kg. Most ''Mancalla'' forms weighed somewhat less (about 2.4 kg), with ''M. milleri'' being a smaller (1.65 kg) and ''M. emlongi'' a much larger bird (3.8 kg) than the rest. The last species thus stood around 55â ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Praemancalla
Mancallinae is an extinct subfamily of prehistoric flightless alcids that lived on the Pacific coast of today's California and Mexico from the late Miocene epoch to the early Pleistocene (ranging from at least 7.4 million to 470,000 years ago). They are sometimes collectively referred to as Lucas auks after the scientist who described the first species, Frederic Augustus Lucas. Description They had evolved along somewhat similar lines as the great auk, their North Atlantic ecological counterpart, but their decidedly stubbier wings were in some aspects more convergent with penguins. Compared with the subarctic great auk, they were also smaller (''see also:'' Bergmann's Rule): ''Praemancalla'' species have been estimated to have weighed about 3 kg. Most ''Mancalla'' forms weighed somewhat less (about 2.4 kg), with ''M. milleri'' being a smaller (1.65 kg) and ''M. emlongi'' a much larger bird (3.8 kg) than the rest. The last species thus stood around 55–60&n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mancalla
Mancallinae is an extinct subfamily of prehistoric flightless alcids that lived on the Pacific coast of today's California and Mexico from the late Miocene epoch to the early Pleistocene (ranging from at least 7.4 million to 470,000 years ago). They are sometimes collectively referred to as Lucas auks after the scientist who described the first species, Frederic Augustus Lucas. Description They had evolved along somewhat similar lines as the great auk, their North Atlantic ecological counterpart, but their decidedly stubbier wings were in some aspects more convergent with penguins. Compared with the subarctic great auk, they were also smaller (''see also:'' Bergmann's Rule): ''Praemancalla'' species have been estimated to have weighed about 3 kg. Most ''Mancalla'' forms weighed somewhat less (about 2.4 kg), with ''M. milleri'' being a smaller (1.65 kg) and ''M. emlongi'' a much larger bird (3.8 kg) than the rest. The last species thus stood around 55â ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcodes
Mancallinae is an extinct subfamily of prehistoric flightless alcids that lived on the Pacific coast of today's California and Mexico from the late Miocene epoch to the early Pleistocene (ranging from at least 7.4 million to 470,000 years ago). They are sometimes collectively referred to as Lucas auks after the scientist who described the first species, Frederic Augustus Lucas. Description They had evolved along somewhat similar lines as the great auk, their North Atlantic ecological counterpart, but their decidedly stubbier wings were in some aspects more convergent with penguins. Compared with the subarctic great auk, they were also smaller (''see also:'' Bergmann's Rule): ''Praemancalla'' species have been estimated to have weighed about 3 kg. Most ''Mancalla'' forms weighed somewhat less (about 2.4 kg), with ''M. milleri'' being a smaller (1.65 kg) and ''M. emlongi'' a much larger bird (3.8 kg) than the rest. The last species thus stood around 55â ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcidae
An auk or alcid is a bird of the family Alcidae in the order Charadriiformes. The alcid family includes the murres, guillemots, auklets, puffins, and murrelets. The word "auk" is derived from Icelandic ''álka'', from Old Norse ''alka'' (auk), from Proto-Germanic *''alkÇ'' (sea-bird, auk). The family contains 25 extant or recently extinct species that are divided into 11 genera. Apart from the extinct great auk, all auks can fly, and are excellent swimmers (appearing to "fly") and divers, but their walking appears clumsy. Several species have different English names in Europe and North America. The two species known as murres in North America are called guillemots in Europe, and the species called little auk in Europe is referred to as dovekie in North America. Description Auks are superficially similar to penguins, having black-and-white colours, upright posture, and some of their habits. Nevertheless, they are not closely related to penguins, but rather are believed to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcidae
An auk or alcid is a bird of the family Alcidae in the order Charadriiformes. The alcid family includes the murres, guillemots, auklets, puffins, and murrelets. The word "auk" is derived from Icelandic ''álka'', from Old Norse ''alka'' (auk), from Proto-Germanic *''alkÇ'' (sea-bird, auk). The family contains 25 extant or recently extinct species that are divided into 11 genera. Apart from the extinct great auk, all auks can fly, and are excellent swimmers (appearing to "fly") and divers, but their walking appears clumsy. Several species have different English names in Europe and North America. The two species known as murres in North America are called guillemots in Europe, and the species called little auk in Europe is referred to as dovekie in North America. Description Auks are superficially similar to penguins, having black-and-white colours, upright posture, and some of their habits. Nevertheless, they are not closely related to penguins, but rather are believed to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Auk
The great auk (''Pinguinus impennis'') is a species of flightless alcid that became extinct in the mid-19th century. It was the only modern species in the genus ''Pinguinus''. It is not closely related to the birds now known as penguins, which were discovered later by Europeans and so named by sailors because of their physical resemblance to the great auk. It bred on rocky, remote islands with easy access to the ocean and a plentiful food supply, a rarity in nature that provided only a few breeding sites for the great auks. When not breeding, they spent their time foraging in the waters of the North Atlantic, ranging as far south as northern Spain and along the coastlines of Canada, Greenland, Iceland, the Faroe Islands, Norway, Ireland, and Great Britain. The bird was tall and weighed about , making it the largest alcid to survive into the modern era, and the second-largest member of the alcid family overall (the prehistoric ''Miomancalla'' was larger). It had a black bac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miomancalla Howardi
''Miomancalla'' is an extinct genus of prehistoric flightless alcids that lived on the Pacific coast of today's California in the Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ... epoch. It contained two species, ''M. howardi'' and ''M. wetmorei''. References {{Taxonbar, from=Q106716100 Auks Extinct flightless birds Neogene birds Prehistoric bird genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Miomancalla
''Miomancalla'' is an extinct genus of prehistoric flightless alcids that lived on the Pacific coast of today's California in the Miocene The Miocene ( ) is the first geological epoch of the Neogene Period and extends from about (Ma). The Miocene was named by Scottish geologist Charles Lyell; the name comes from the Greek words (', "less") and (', "new") and means "less recen ... epoch. It contained two species, ''M. howardi'' and ''M. wetmorei''. References {{Taxonbar, from=Q106716100 Auks Extinct flightless birds Neogene birds Prehistoric bird genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergmann's Rule
Bergmann's rule is an ecogeographical rule that states that within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, while populations and species of smaller size are found in warmer regions. Bergmann's rule only describes the overall size of the animals, but does not include body parts like Allen's rule does. Although originally formulated in relation to species within a genus, it has often been recast in relation to populations within a species. It is also often cast in relation to latitude. It is possible that the rule also applies to some plants, such as ''Rapicactus''. The rule is named after nineteenth century German biologist Carl Bergmann, who described the pattern in 1847, although he was not the first to notice it. Bergmann's rule is most often applied to mammals and birds which are endotherms, but some researchers have also found evidence for the rule in studies of ectothermic species, such as the ant '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penguin
Penguins (order Sphenisciformes , family Spheniscidae ) are a group of aquatic flightless birds. They live almost exclusively in the Southern Hemisphere: only one species, the Galápagos penguin, is found north of the Equator. Highly adapted for life in the water, penguins have countershaded dark and white plumage and flippers for swimming. Most penguins feed on krill, fish, squid and other forms of sea life which they catch with their bills and swallow it whole while swimming. A penguin has a spiny tongue and powerful jaws to grip slippery prey. They spend roughly half of their lives on land and the other half in the sea. The largest living species is the emperor penguin (''Aptenodytes forsteri''): on average, adults are about tall and weigh . The smallest penguin species is the little blue penguin (''Eudyptula minor''), also known as the fairy penguin, which stands around tall and weighs . Today, larger penguins generally inhabit colder regions, and smaller pengu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype Specimen Of Mancalla Vegrandis
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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