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Trachinus Minutus
''Trachinus'' is a genus of weevers, order Perciformes that consists of seven extant species. Six of the genus representatives inhabit the waters of Eastern Atlantic Ocean, but only one, '' Trachinus cornutus'', inhabits the South-Eastern Pacific Ocean. Three of the Atlantic species occur near the coasts of Europe. An eighth extinct species, '' T. minutus'', is known from Oligocene-aged strata from the Carpathian Mountains, while a ninth species, also extinct, '' T. dracunculus'', is known from middle-Miocene-aged strata from Piemonte, Italy. The genus name, given by Linnaeus, is from ', the Medieval Latin name for the fish, which in turn is from the Ancient Greek τρᾱχύς ''trachýs'' ‘rough’.Entry ‘Trachinidae’. Webster’s ''Third Unabridged Dictionary'' Species * Spotted weever, '' Trachinus araneus'' Cuvier, 1829. * Guinean weever, '' Trachinus armatus'' Bleeker, 1861. * Sailfin weever, '' Trachinus collignoni'' Roux, 1957. *'' Trachinus cornutus'' Guichenot ... [...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] |
