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Pleistocene :: Pleistocene (a.) Of or pertaining to the epoch, or the deposits, following the Tertiary, and immediately preceding man..

Oreodon :: Oreodon (n.) A genus of extinct herbivorous mammals, abundant in the Tertiary formation of the Rocky Mountains. It is more or less related to the camel, hog, and deer..

Cenozoic :: Cenozoic (a.) Belonging to the most recent division of geological time, including the tertiary, or Age of mammals, and the Quaternary, or Age of man. [Written also caenozoic, cainozoic, kainozoic.] See Geology..

Triethylamine :: Triethylamine (n.) A tertiary amine analogous to trimethylamine.

Neocene :: Neocene (a.) More recent than the Eocene, that is, including both the Miocene and Pliocene divisions of the Tertiary..

Bad Lands :: Bad lands () Barren regions, especially in the western United States, where horizontal strata (Tertiary deposits) have been often eroded into fantastic forms, and much intersected by ca–ons, and where lack of wood, water, and forage increases the difficulty of traversing the country, whence the name, first given by the Canadian French, Mauvaises Terres (bad lands)..

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..

Crag :: Crag (n.) A partially compacted bed of gravel mixed with shells, of the Tertiary age..

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

Tertiary :: Tertiary (a.) Possessing some quality in the third degree; having been subjected to the substitution of three atoms or radicals; as, a tertiary alcohol, amine, or salt. Cf. Primary, and Secondary..

Tertiary :: Tertiary (a.) Being of the third formation, order, or rank; third; as, a tertiary use of a word..

Flysch :: Flysch (n.) A name given to the series of sandstones and schists overlying the true nummulitic formation in the Alps, and included in the Eocene Tertiary..

Diabase :: Diabase (n.) A basic, dark-colored, holocrystalline, igneous rock, consisting essentially of a triclinic feldspar and pyroxene with magnetic iron; -- often limited to rocks pretertiary in age. It includes part of what was early called greenstone..

Taxeopoda :: Taxeopoda (n. pl.) An order of extinct Mammalia found in the Tertiary formations.

Tertiary :: Tertiary (n.) One of the quill feathers which are borne upon the basal joint of the wing of a bird. See Illust. of Bird.

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..

Quaternary :: Quaternary (a.) Later than, or subsequent to, the Tertiary; Post-tertiary; as, the Quaternary age, or Age of man..

Toxodonta :: Toxodonta (n.pl.) An extinct order of Mammalia found in the South American Tertiary formation. The incisor teeth were long and curved and provided with a persistent pulp. They are supposed to be related both to the rodents and ungulates. Called also Toxodontia.

Tertiary :: Tertiary (a.) Later than, or subsequent to, the Secondary..

Hipparion :: Hipparion (n.) An extinct genus of Tertiary mammals allied to the horse, but three-toed, having on each foot a small lateral hoof on each side of the main central one. It is believed to be one of the ancestral genera of the Horse family..

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