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trilobite

(Encyclopedia)CE5 Dorsal view of a trilobite trilobite trīˈləbītˌ [key], subphylum of the phylum Arthropoda that includes a large group of extinct marine animals that were abundant in the Paleozoic era. Th...

side-necked turtle

(Encyclopedia)side-necked turtle, name for the long-necked turtle of the families Chelidae and Pelomedusidae, found only in the Southern Hemisphere. The neck in these two families is of a different structure from t...

Cork, city, Ireland

(Encyclopedia)Cork, city, county town of Co. Cork, S Republic of Ireland, on the Lee River near its mouth on Cork Harbour. The oldest part of the town rests on an isl...

DDT

(Encyclopedia)DDT or 2,2-bis(p-chlorophenyl)-1,1,1,-trichloroethane, chlorinated hydrocarbon compound used as an insecticide. First introduced during the 1940s, it killed insects that spread disease and fed on crop...

chimaera

(Encyclopedia)chimaera kĭmērˈə [key], cartilaginous marine fish, related to the sharks. Also called ratfishes, chimaeras are found in temperate oceans throughout the world, mostly in deep water. They have large...

albatross

(Encyclopedia)albatross ălˈbətrôs [key], common name for sea birds of the order of tube-nosed swimmers (Procellariiformes), which includes petrels, shearwaters, and fulmars. The wandering albatross, Diomedea ex...

harbor seal

(Encyclopedia)harbor seal, most commonly seen seal of the Northern Hemisphere, Phoca vitulina. Harbor seals are found along coasts and in sheltered bays and harbors of North America, Europe, and NE Asia. They range...

angelfish

(Encyclopedia)angelfish, common name for certain members of the Pomacanthidae, a family of brightly colored reef-dwelling tropical fishes with compressed bodies and small mouths and teeth. They were formerly classi...

Nuer

(Encyclopedia)Nuer no͞oˈər, no͝or [key], a Nilotic people living around Lake No in South Sudan. Their economy and social life generally revolve around cattle, which are grazed on the plains during the dry seaso...

Nyasa, Lake

(Encyclopedia)Nyasa, Lake məläˈwē [key], Port. Niassa, c.11,600 sq mi (30,040 sq km), c.360 mi (580 km) long and from 15 to 50 mi (24–80 km) wide, E central Africa, in the Great Rift Valley. Lake Nyasa, the t...