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Coccosteus :: Coccosteus (n.) An extinct genus of Devonian ganoid fishes, having the broad plates about the head studded with berrylike tubercles..

Zaphrentis :: Zaphrentis (n.) An extinct genus of cyathophylloid corals common in the Paleozoic formations. It is cup-shaped with numerous septa, and with a deep pit in one side of the cup..

Xiphodon :: Xiphodon (n.) An extinct genus of artiodactylous mammals found in the European Tertiary formations. It had slender legs, didactylous feet, and small canine teeth..

Brontotherium :: Brontotherium (n.) A genus of large extinct mammals from the miocene strata of western North America. They were allied to the rhinoceros, but the skull bears a pair of powerful horn cores in front of the orbits, and the fore feet were four-toed. See Illustration in Appendix..

Zeuglodon :: Zeuglodon (n.) A genus of extinct Eocene whales, remains of which have been found in the Gulf States. The species had very long and slender bodies and broad serrated teeth. See Phocodontia..

Glyptodont :: Glyptodont (n.) One of a family (Glyptodontidae) of extinct South American edentates, of which Glyptodon is the type. About twenty species are known..

Out :: Out (a.) Beyond the limit of existence, continuance, or supply; to the end; completely; hence, in, or into, a condition of extinction, exhaustion, completion; as, the fuel, or the fire, has burned out..

Trigonia :: Trigonia (n.) A genus of pearly bivalve shells, numerous extinct species of which are characteristic of the Mesozoic rocks. A few living species exist on the coast of Australia..

Solitaire :: Solitaire (n.) A large extinct bird (Pezophaps solitaria) which formerly inhabited the islands of Mauritius and Rodrigeuz. It was larger and taller than the wild turkey. Its wings were too small for flight. Called also solitary.

Zoology :: Zoology (n.) That part of biology which relates to the animal kingdom, including the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct..

Modocs :: Modocs (n. pl.) A tribe of warlike Indians formerly inhabiting Northern California. They are nearly extinct.

Epiornis :: Epiornis (n.) One of the gigantic ostrichlike birds of the genus Aepiornis, only recently extinct. Its remains have been found in Madagascar..

Eosaurus :: Eosaurus (n.) An extinct marine reptile from the coal measures of Nova Scotia; -- so named because supposed to be of the earliest known reptiles.

Escheat :: Escheat (n.) The falling back or reversion of lands, by some casualty or accident, to the lord of the fee, in consequence of the extinction of the blood of the tenant, which may happen by his dying without heirs, and formerly might happen by corruption of blood, that is, by reason of a felony or attainder..

Pterodactyl :: Pterodactyl (n.) An extinct flying reptile; one of the Pterosauria. See Illustration in Appendix.

Extinguishment :: Extinguishment (n.) The act of extinguishing, putting out, or quenching, or the state of being extinguished; extinction; suppression; destruction; nullification; as, the extinguishment of fire or flame, of discord, enmity, or jealousy, or of love or affection..

Amblypoda :: Amblypoda (n. pl.) A group of large, extinct, herbivorous mammals, common in the Tertiary formation of the United States..

Sivatherium :: Sivatherium (n.) A genus of very large extinct ruminants found in the Tertiary formation of India. The snout was prolonged in the form of a proboscis. The male had four horns, the posterior pair being large and branched. It was allied to the antelopes, but very much larger than any exsisting species..

Otozoum :: Otozoum (n.) An extinct genus of huge vertebrates, probably dinosaurs, known only from four-toed tracks in Triassic sandstones..

Saururae :: Saururae (n. pl.) An extinct order of birds having a long vertebrated tail with quills along each side of it. Archaeopteryx is the type. See Archaeopteryx, and Odontornithes..

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