Columbia Encyclopedia

Search results

500 results found

Rhyniophyta

(Encyclopedia)Rhyniophyta rīˌnēŏfˈətə [key], division of plants known only from fossils, of which the genus Rhynia was perhaps the most important. These plants date from the Silurian and Devonian age. Relati...

Shiwalik Hills

(Encyclopedia)Shiwalik Hills sĭwäˈlĭk [key], southernmost range of the Himalayas, S central Asia, extending c.1,050 mi (1,690 km) from SW Kashmir through N India into S Nepal paralleling the main Himalayan rang...

anticoagulant

(Encyclopedia)anticoagulant ănˌtēkōăgˈyələnt [key], any of several substances that inhibit blood clot formation (see blood clotting). Some anticoagulants, such as the coumarin derivatives bishydroxycoumarin...

Dawkins, Sir William Boyd

(Encyclopedia)Dawkins, Sir William Boyd, 1837–1929, English geologist and archaeologist. He was a member (1861–69) of the Geological Survey of Great Britain, curator (1870–90) of the Manchester Museum, and pr...

Scudder, Samuel Hubbard

(Encyclopedia)Scudder, Samuel Hubbard, 1837–1911, American entomologist, b. Boston, grad. Williams (B.A., 1857) and Harvard (B.S., 1862). The founder of American insect paleontology and an authority on Orthoptera...

Hyatt, Alpheus

(Encyclopedia)Hyatt, Alpheus, 1838–1902, American zoologist, b. Washington, D.C., grad. Harvard, 1862. He was a devoted follower of Louis Agassiz. From 1870, Hyatt was custodian and later curator of the Boston So...

calcareous soil

(Encyclopedia)calcareous soil kălkârˈēəs [key], soil formed largely by the weathering of calcareous rocks and fossil shell beds. Different varieties usually contain chalk, marl, and limestone and frequently a ...

Saint Austell

(Encyclopedia)Saint Austell sŭnt ôˈstəl; [key], town (1991 pop. 36,639), Cornwall, SW England, at the mouth of the Fowey River on St. Austell Bay. China clay (discovered there c.1755) is produced and exported, ...

Dinotherium

(Encyclopedia)Dinotherium dīnəthērˈēəm [key] [Gr.,=terrible beast], extinct mammal related to the elephant, fossil remains of which have been found in Miocene and Pliocene formations of Africa, Europe, and In...
 

Browse by Subject