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ider ducks. It was formerly common on the coast of New England, but is now supposed to be extinct, no specimens having been reported since 1878. -- Labrador feldspar. See Labradorite. -- Labrador tea (Bot.), a name of two low, evergreen shrubs of the genus Ledum (L. palustre and L. latifolium), found in Northern Euro…

An extinct order of Amphibia, including the typical genus Labyrinthodon, and many other allied forms, from the Carboniferous, Permian, and Triassic formations. By recent writers they are divided into two or more orders. See Stegocephala.

Zoöl.), a peculiar owl (Sceloglaux albifacies) of New Zealand, said to be on the verge of extinction. The name alludes to its notes.

One of an extinct family of trees allied to the modern club mosses, and including Lepidodendron and its allies.

A genus of extinct mammals allied to the cats, and having in the upper jaw canine teeth of remarkable size and strength; -- hence called saber-toothed tigers.

An extinct, hairy, maned elephant (Elephas primigenius), of enormous size, remains of which are found in the northern parts of both continents. The last of the race, in Europe, were coeval with prehistoric man.

An extinct genus of mammals closely allied to the elephant, but having less complex molar teeth, and often a pair of lower, as well as upper, tusks, which are incisor teeth. The species were mostly larger than elephants, and their romains occur in nearly all parts of the world in deposits ranging from Miocene to late Q…

A large extinct genus of labyrinthodonts, found in the European Triassic rocks.

An extinct quaternary mammal, of great size, allied to the sloth.

An extinct genus of tree ferns with large, two-ranked leaves, or fronds.

An extinct gigantic quaternary mammal, allied to the ant-eaters and sloths. Its remains are found in South America.

One of a family of extinct edentates found in America. The family includes the megatherium, the megalonyx, etc.

lied to the Crustacea. It includes the trilobites, Eurypteroidea, and Limuloidea. All are extinct except the horseshoe crabs of the last group. See Limulus.

An extinct mammal of the Horse family, but not larger than a sheep, and having three toes on each foot.

An extinct genus of small Triassic mammals, the oldest yet found in European strata.

An extinct Miocene mammal of the Horse family, closely related to the genus Anhithecrium, and having three usable hoofs on each foot.

Any one of several very large extinct species of wingless birds belonging to Dinornis, and other related genera, of the suborder Dinornithes, found in New Zealand. They are allied to the apteryx and the ostrich. They were probably exterminated by the natives before New Zealand was discovered by Europeans. Some species…

A tribe of warlike Indians formerly inhabiting Northern California. They are nearly extinct.

A gallinule (Notornis Mantelli) formerly inhabiting New Zealand, but now supposed to be extinct. It was incapable of flight. See Notornis.

An extinct genus of large herbivorous dinosaurs, found in Jurassic strata in America.