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Dissolution :: Dissolution (n.) The extinction of life in the human body; separation of the soul from the body; death.

Dinornis :: Dinornis (n.) A genus of extinct, ostrichlike birds of gigantic size, which formerly inhabited New Zealand. See Moa..

Sigillarid :: Sigillarid (n.) One of an extinct family of cryptagamous trees, including the genus Sigillaria and its allies..

Palapteryx :: Palapteryx (n.) A large extinct ostrichlike bird of New Zealand.

Dinosauria :: Dinosauria (n. pl.) An order of extinct mesozoic reptiles, mostly of large size (whence the name). Notwithstanding their size, they present birdlike characters in the skeleton, esp. in the pelvis and hind limbs. Some walked on their three-toed hind feet, thus producing the large bird tracks, so-called, of mesozoic sandstones; others were five-toed and quadrupedal. See Illust. of Compsognathus, also Illustration of Dinosaur 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..

Notornis :: Notornis (n.) A genus of birds allied to the gallinules, but having rudimentary wings and incapable of flight. Notornis Mantelli was first known as a fossil bird of New Zealand, but subsequently a few individuals were found living on the southern island. It is supposed to be now nearly or quite extinct..

Placodermi :: Placodermi (n. pl.) An extinct group of fishes, supposed to be ganoids. The body and head were covered with large bony plates. See Illust. under Pterichthys, and Coccosteus..

Dinotherium :: Dinotherium (n.) A large extinct proboscidean mammal from the miocene beds of Europe and Asia. It is remarkable fora pair of tusks directed downward from the decurved apex of the lower jaw.

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..

Mosasaurus :: Mosasaurus (n.) A genus of extinct marine reptiles allied to the lizards, but having the body much elongated, and the limbs in the form of paddles. The first known species, nearly fifty feet in length, was discovered in Cretaceous beds near Maestricht, in the Netherlands..

Ichthyosaurus :: Ichthyosaurus (n.) An extinct genus of marine reptiles; -- so named from their short, biconcave vertebrae, resembling those of fishes. Several species, varying in length from ten to thirty feet, are known from the Liassic, Oolitic, and Cretaceous formations..

Stegosaurus :: Stegosauria (n. pl.) An extinct order of herbivorous dinosaurs, including the genera Stegosaurus, Omosaurus, and their allies..

Extinct :: Extinct (a.) Without a survivor; without force; dead; as, a family becomes extinct; an extinct feud or law..

Ornithopappi :: Ornithopappi (n. pl.) An extinct order of birds. It includes only the Archaeopteryx.

Megaphyton :: Megaphyton (n.) An extinct genus of tree ferns with large, two-ranked leaves, or fronds..

Nototherium :: Nototherium (n.) An extinct genus of gigantic herbivorous marsupials, found in the Pliocene formation of Australia..

Spiritoso :: Spiritless (a.) Having no breath; extinct; dead.

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

Paleotherium :: Paleotherium (n.) An extinct genus of herbivorous Tertiary mammals, once supposed to have resembled the tapir in form, but now known to have had a more slender form, with a long neck like that of a llama..

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