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Galerella Fibrillosa
''Herpestes'' is a genus within the mongoose family Herpestidae. Several species in the family are known as slender mongooses. It is the type genus of the family, and comprises 5-6 living species, each with several subspecies. Fossil remains of three prehistoric species were excavated in France, and described in 1853. Characteristics The living ''Herpestes'' species are sexually dimorphic, with females smaller than males. They range in weight from . They share several characteristics, including the shape of the cheek teeth and of the tympanic bullae, and the presence of the first upper molar teeth. They are all solitary. Males have one chromosome less than females, as one Y chromosome is translocated to an autosome. Classification The scientific name ''Herpestes'' was proposed by Johann Karl Wilhelm Illiger in 1811 for mongoose species in the south of the Old World, commonly called "Ichneumon" at the time. Until 1835, 12 mongoose species from Africa and Asia were cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oligocene
The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the exact dates of the start and end of the epoch are slightly uncertain. The name Oligocene was coined in 1854 by the German paleontologist Heinrich Ernst Beyrich from his studies of marine beds in Belgium and Germany. The name comes from the Ancient Greek (''olígos'', "few") and (''kainós'', "new"), and refers to the sparsity of extant forms of molluscs. The Oligocene is preceded by the Eocene Epoch and is followed by the Miocene Epoch. The Oligocene is the third and final epoch of the Paleogene Period. The Oligocene is often considered an important time of transition, a link between the archaic world of the tropical Eocene and the more modern ecosystems of the Miocene. Major changes during the Oligocene included a global expansion o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
