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Micromys Caesaris
''Micromys'' is a genus of small rodents in the subfamily Murinae. The genus contains two living species: the widespread Eurasian harvest mouse (''Micromys minutus'') of much of Europe and Asia; and the more restricted Indochinese harvest mouse (''Micromys erythrotis'') of Vietnam, southern China, and perhaps nearby regions. Fossils of ''Micromys'' date back to the Late Miocene and include at least 10 extinct species, which form several lineages. Taxonomy ''Micromys'' is not closely related to any other murine genus, which has made elucidating its phylogenetic relationships difficult. Previously, it was placed in a distinct murine clade also containing '' Hapalomys'', '' Chiropodomys'', and '' Vandeleuria'', but studies have since found this clade to be polyphyletic, and instead found ''Micromys'' to belong to a division of its own that forms a sister group to the tribe Rattini, which contains the true rats among many other genera. It has been debated over whether ''Microm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Late Miocene
The Late Miocene (also known as Upper Miocene) is a sub-epoch of the Miocene Epoch made up of two stages. The Tortonian and Messinian stages comprise the Late Miocene sub-epoch, which lasted from 11.63 Ma (million years ago) to 5.333 Ma. The evolution of life The gibbons (family Hylobatidae) and orangutans (genus ''Pongo'') are the first groups to split from the line leading to the hominins, including humans, then gorillas (genus ''Gorilla''), and finally, chimpanzees and bonobo The bonobo (; ''Pan paniscus''), also historically called the pygmy chimpanzee and less often the dwarf chimpanzee or gracile chimpanzee, is an endangered great ape and one of the two species making up the genus '' Pan,'' the other being the co ...s (genus '' Pan''). The splitting date between hominin and chimpanzee lineages is placed by some between 4 to 8 million years ago, that is, during the Late Miocene. References External links GeoWhen Database - Late Miocene .03 03 * * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodent
Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia (), which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for New Zealand, Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/richochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include Mouse, mice, rats, squirrels, prairie dogs, porcupines, beavers, guinea pigs, and hamsters. Rabbits, hares, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvest Mouse1
Harvesting is the process of gathering a ripe crop from the fields. Reaping is the cutting of grain or pulse for harvest, typically using a scythe, sickle, or reaper. On smaller farms with minimal mechanization, harvesting is the most labor-intensive activity of the growing season. On large mechanized farms, harvesting uses the most expensive and sophisticated farm machinery, such as the combine harvester. Process automation has increased the efficiency of both the seeding and harvesting processes. Specialized harvesting equipment utilizing conveyor belts to mimic gentle gripping and mass-transport replaces the manual task of removing each seedling by hand. The term "harvesting" in general usage may include immediate postharvest handling, including cleaning, sorting, packing, and cooling. The completion of harvesting marks the end of the growing season, or the growing cycle for a particular crop, and the social importance of this event makes it the focus of seasonal celebratio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Society Of Mammalogists
The American Society of Mammalogists (ASM) was founded in 1919. Its primary purpose is to encourage the study of mammals, and professions studying them. There are over 4,500 members of this society, and they are primarily professional scientists who emphasize the importance of public policy and education. There are several ASM meetings held each year and the society manages several publications such as the '' Journal of Mammalogy'', ''Special Publications'', '' Mammalian Species'', and ''Society Pamphlets''. The best known of these is the ''Journal of Mammalogy''. The ASM also maintains ''The Mammal Image Library'' which contains more than 1300 mammal slides. A president, vice president, recording secretary, secretary-treasurer, and journal editor are all elected by the members to be officers of the society. In addition, ASM is composed of thirty one committees, including the Animal Care and Use Committee, the Conservation Awards Committee, the International Relations Committee, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rattus
''Rattus'' is a genus of muroid rodents, all typically called rats. However, the term rat can also be applied to rodent species outside of this genus. Species and description The best-known ''Rattus'' species are the black rat (''R. rattus'') and the brown rat (''R. norvegicus''). The group is generally known as the Old World rats or true rats and originated in Asia. Rats are bigger than most Old World mice, which are their relatives, but seldom weigh over in the wild. Taxonomy of ''Rattus'' The genus ''Rattus'' is a member of the giant subfamily Murinae. Several other murine genera are sometimes considered part of ''Rattus'': '' Lenothrix'', '' Anonymomys'', '' Sundamys'', '' Kadarsanomys'', ''Diplothrix'', '' Margaretamys'', ''Lenomys'', '' Komodomys'', ''Palawanomys'', '' Bunomys'', '' Nesoromys'', ''Stenomys'', '' Taeromys'', '' Paruromys'', '' Abditomys'', '' Tryphomys'', '' Limnomys'', '' Tarsomys'', ''Bullimus'', ''Apomys'', ''Millardia'', ''Srilankamys'', '' Niviv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rattini
Rattini is a very large, diverse tribe of muroid rodents in the subfamily Murinae. They are found throughout Asia and Australasia, with a few species ranging into Europe and northern Africa. The most well-known members of this group are the true rats (genus ''Rattus''), several species of which have been introduced worldwide. Taxonomy They are thought to be the second-most basal member of the Murinae despite their high modern diversity, with only the Phloeomyini being more basal than them. The genus '' Micromys'' was previously classified in a polyphyletic division also containing ''Hapalomys'', ''Chiropodomys'', and '' Vandeleuria'', but phylogenetic evidence supports it forming a sister group to the rest of the Rattini. It has been debated over whether it represents its own tribe (Micromyini) or a basal member of the Rattini, but the American Society of Mammalogists classifies it within the Rattini based on a 2019 study. Distribution They are mostly found throughout Asia, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sister Group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same ta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyphyly
A polyphyletic group is an assemblage of organisms or other evolving elements that is of mixed evolutionary origin. The term is often applied to groups that share similar features known as homoplasies, which are explained as a result of convergent evolution. The arrangement of the members of a polyphyletic group is called a polyphyly .. ource for pronunciation./ref> It is contrasted with monophyly and paraphyly. For example, the biological characteristic of warm-bloodedness evolved separately in the ancestors of mammals and the ancestors of birds; "warm-blooded animals" is therefore a polyphyletic grouping. Other examples of polyphyletic groups are algae, C4 photosynthetic plants, and edentates. Many taxonomists aim to avoid homoplasies in grouping taxa together, with a goal to identify and eliminate groups that are found to be polyphyletic. This is often the stimulus for major revisions of the classification schemes. Researchers concerned more with ecology than with syst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vandeleuria
''Vandeleuria'' is a small genus of rodent from Asia with only three species. It is the only member of the tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English is in the discipline of anthropology. This definition is contested, in part due to confl ... Vandeleurini. Species in this genus are known as the long-tailed climbing mice. Species * Nilgiri long-tailed tree mouse, ''Vandeleuria nilagirica'' Jerdon, 1867 * Nolthenius's long-tailed climbing mouse, ''Vandeleuria nolthenii'' Phillips, 1929 * Asiatic long-tailed climbing mouse, ''Vandeleuria oleracea'' Bennett, 1832 References Rodent genera Taxa named by John Edward Gray {{Murinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pencil-tailed Tree Mouse
''Chiropodomys'' (or pencil-tailed tree mice) is a genus of Old World rats and mice native to Southeast Asia and northeast India. They are tree-dwelling, very small mice, mostly found in tropical rainforest. In total six extant species have been identified, but only one of these, '' Chiropodomys gliroides'', is common and widely distributed, and has been extensively studied. Species Genus ''Chiropodomys'' — pencil-tailed tree mice: * Palawan pencil-tailed tree mouse, ''Chiropodomys calamianensis'' Taylor, 1934, Palawan and neighboring islands * Indomalayan pencil-tailed tree mouse, ''Chiropodomys gliroides'' Blyth, 1856, northeast India, southeastern China, mainland Southeast Asia, Sumatra, Java * Koopman's pencil-tailed tree mouse, ''Chiropodomys karlkoopmani'' Musser, 1979, Mentawai Islands *Large pencil-tailed tree mouse, ''Chiropodomys major'' Thomas, 1893, Borneo * Gray-bellied pencil-tailed tree mouse, ''Chiropodomys muroides'' Medway, 1965, Borneo * Small pencil-taile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hapalomys
''Hapalomys'' is a genus of rodent in the family Muridae endemic to Southeast Asia. It is the only member of the tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English is in the discipline of anthropology. This definition is contested, in part due to confl ... Hapalomyini. It contains the following species: * Delacour's marmoset rat (''Hapalomys delacouri'') * Marmoset rat (''Hapalomys longicaudatus'') * Suntsov's marmoset rat (''Hapalomys suntsovi''), a Vietnamese endemic recently described from Binh Phuoc Province, southern Vietnam ''† Hapalomys gracilis'' (fossil species) References * Rodent genera Taxa named by Edward Blyth Taxonomy articles created by Polbot {{Murinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fossil
A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved in amber, hair, petrified wood and DNA remnants. The totality of fossils is known as the ''fossil record''. Paleontology is the study of fossils: their age, method of formation, and evolutionary significance. Specimens are usually considered to be fossils if they are over 10,000 years old. The oldest fossils are around 3.48 billion years old to 4.1 billion years old. Early edition, published online before print. The observation in the 19th century that certain fossils were associated with certain rock strata led to the recognition of a geological timescale and the relative ages of different fossils. The development of radiometric dating techniques in the early 20th century allowed scientists to quantitatively measure the abs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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