Callidium Sempervirens
''Callidium'' is a genus of beetles in the family Cerambycidae, containing the following species: * ''Callidium angustipennis'' Chemsak, 1964 * ''Callidium antennatum'' Newman, 1838 * ''Callidium bifasciatum'' Fabricius, 1787 * ''Callidium biguttatum'' Sallé, 1856 * ''Callidium brevicorne'' Olivier, 1790 * ''Callidium californicum'' Casey, 1912 * ''Callidium cicatricosum'' Mannerheim, 1853 * ''Callidium duodecimsignatum'' Perroud, 1855 * ''Callidium frigidum'' Casey, 1912 * ''Callidium fulvicolle'' Fabricius, 1792 * ''Callidium hoppingi'' Linsley, 1957 * ''Callidium juniperi'' Fisher, 1920 * ''Callidium leechi'' Linsley & Chemsak, 1963 * ''Callidium powelli'' Linsley & Chemsak, 1963 * ''Callidium pseudotsugae'' Fisher, 1920 * ''Callidium rufipenne'' Motschulsky, 1860 * ''Callidium schotti'' Schaeffer, 1917 * ''Callidium sempervirens'' Linsley, 1942 * ''Callidium sequoiarium'' Fisher, 1920 * ''Callidium texanum'' Schaeffer, 1917 * ''Callidium vandykei'' Linsley, 1957 * ''Callidium ...
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Eocene
The Eocene ( ) is a geological epoch (geology), epoch that lasted from about 56 to 33.9 million years ago (Ma). It is the second epoch of the Paleogene Period (geology), Period in the modern Cenozoic Era (geology), Era. The name ''Eocene'' comes from the Ancient Greek (''Ēṓs'', 'Eos, Dawn') and (''kainós'', "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch.See: *Letter from William Whewell to Charles Lyell dated 31 January 1831 in: * From p. 55: "The period next antecedent we shall call Eocene, from ήως, aurora, and χαινος, recens, because the extremely small proportion of living species contained in these strata, indicates what may be considered the first commencement, or ''dawn'', of the existing state of the animate creation." The Eocene spans the time from the end of the Paleocene Epoch to the beginning of the Oligocene Epoch. The start of the Eocene is marked by a brief period in which the concentration of the carbon isoto ...
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