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Boone

(Encyclopedia)Boone. 1 City (2020 pop. 12,242), seat of Boone co., central Iowa, on the Des Moines River; inc. 1865. It is a railroad and industrial center with ...

Oligocene epoch

(Encyclopedia)Oligocene epoch ŏlˈəgōsēnˌ [key], third epoch of the Tertiary period in the Cenozoic era of geologic time, lasting from 38 to 24 million years ago. More of North America was dry land during the ...

Cordilleras

(Encyclopedia)Cordilleras kôrdĭlˈərəz, Span. kōrdēyāˈräs [key] [Span., originally=little string], general name for the entire chain of mountain systems of W North America, extending from N Alaska to Nicar...

Taconic Mountains

(Encyclopedia)Taconic Mountains təkŏnˈĭk [key], range of the Appalachian Mts., extending c.150 mi (240 km) north-south between the Green Mts. and the Hudson Valley along parts of New York's border with Vermont,...

Blackbeard

(Encyclopedia)Blackbeard, d. 1718, English pirate. His name was probably Edward Teach, Thatch, or Thach. He probably began as a privateer in the War of the Spanish Succession (1701–14), then turned pirate. In 171...

Permian period

(Encyclopedia)Permian period pûrˈmēən [key] [from Perm, Russia], sixth and last period of the Paleozoic era (see Geologic Timescale, tablegeologic timescale, table) from 250 to 290 million years ago. Many ma...

Hepburn, William Peters

(Encyclopedia)Hepburn, William Peters, 1833–1916, American legislator, b. Wellsville, Ohio. He was raised in Iowa and entered law there. He was a Civil War cavalry officer. From 1881 to 1887 he served as a Republ...

Sioux City

(Encyclopedia)Sioux City, city (1990 pop. 80,505), seat of Woodbury co., NW Iowa, at the junction of the Big Sioux and Floyd rivers with the Missouri; inc. 1857. It is a shipping, wholesale trade, and industrial ce...

butterwort

(Encyclopedia)butterwort, common name for several species of the plant genus Pinguicula of the north temperate zone and the mountains of tropical America. It is a member of the family Lentibulariaceae (bladderwort ...

Digger Indians

(Encyclopedia)Digger Indians, term indiscriminately applied to many Native Americans of the central plateau region of W North America, including tribes in Oregon, Idaho, Utah, Arizona, Nevada, and central Californi...