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Precambrian

(Encyclopedia) Precambrian, name of a major division of geologic time (see Geologic Timescale, tablegeologic timescale, table), from c.5 billion to 570 million years ago. It is now usually divided…

Columbia Plateau

(Encyclopedia) Columbia Plateau, physiographic region of North America, c.100,000 sq mi (259,000 sq km), NW United States, between the Rocky Mts. and the Cascade Range in Washington, Oregon, and…

Francken

(Encyclopedia) FranckenFranckenfrängˈkən [key] or FranckFranckenfrängk [key], family of Flemish painters in the 16th and 17th cent. Prominent members were Hieronymus Francken, c.1540–1610, student of…

greenling

(Encyclopedia) greenling, common name for any of several species of carnivorous, spiny-finned fishes of the family Hexagrammidae, common in the Pacific Ocean, especially in the waters N of Monterey,…

Dayr az Zawr

(Encyclopedia) Dayr az Zawr Dayr az Zawr dĕr ăz zôr [key] or Deir ez Zor Dayr az Zawr…

Dutton, Clarence Edward

(Encyclopedia) Dutton, Clarence Edward, 1841–1912, American geologist, b. Wallingford, Conn., grad. Yale, 1860. After service in the army during and after the Civil War, he was a member (1875–91) of…

Kermanshah

(Encyclopedia) KermanshahKermanshahkĕrmänˌshäˈ [key], city (1991 pop. 624,084), capital of Kermanshah prov., W Iran. It is the trade center for a rich agricultural region that produces grain, rice,…

Kelley, Mike

(Encyclopedia) Kelley, Mike (Michael Kelley), 1954–2012, American artist, b. Wayne, Mich., studied Univ. of Michigan, Ann Arbor (B.F.A., 1976), California Institute of the Arts (M.F.A., 1978). At…

alyssum

(Encyclopedia) alyssumalyssuməlĭsˈəm [key], any species of the genus Alyssum of the family Cruciferae (or Brassicaceae; mustard family), annual and perennial herbs native to the Mediterranean area. A…

Wallace, Henry Cantwell

(Encyclopedia) Wallace, Henry Cantwell, 1866–1924, American agricultural leader and cabinet officer, b. Rock Island, Ill., grad. Iowa State College of Agriculture (now Iowa State Univ.), 1892; son of…