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Miliolite :: Miliolite (n.) A fossil shell of, or similar to, the genus Miliola..

Nautilus :: Nautilus (n.) The only existing genus of tetrabranchiate cephalopods. About four species are found living in the tropical Pacific, but many other species are found fossil. The shell is spiral, symmetrical, and chambered, or divided into several cavities by simple curved partitions, which are traversed and connected together by a continuous and nearly central tube or siphuncle. See Tetrabranchiata..

Indurate :: Indurate (v. t.) To make hard; as, extreme heat indurates clay; some fossils are indurated by exposure to the air..

Pleurocentrum :: Pleurocentrum (n.) One of the lateral elements in the centra of the vertebrae in some fossil batrachians.

Calcinable :: Calcinable (a.) That may be calcined; as, a calcinable fossil..

Fossilize :: Fossilize (v. i.) To become fossil.

Paleontography :: Paleontography (n.) The description of fossil remains.

Juniperite :: "Juniperite (n.) One of the fossil Coniferae, evidently allied to the juniper..

Carpolite :: Carpolite (n.) A general term for a fossil fruit, nut, or seed..

Crinoidea :: Crinoidea (n. pl.) A large class of Echinodermata, including numerous extinct families and genera, but comparatively few living ones. Most of the fossil species, like some that are recent, were attached by a jointed stem. See Blastoidea, Cystoidea, Comatula..

Fossilism :: Fossilism (n.) The science or state of fossils.

Madreporite :: Madreporite (n.) A fossil coral.

Parkeria :: Parkeria (n.) A genus of large arenaceous fossil Foraminifera found in the Cretaceous rocks. The species are globular, or nearly so, and are of all sizes up to that of a tennis ball..

Rugosa :: Rugosa (n. pl.) An extinct tribe of fossil corals, including numerous species, many of them of large size. They are characteristic of the Paleozoic formations. The radiating septs, when present, are usually in multiples of four. See Cyathophylloid..

Spirillum :: Spirifer (n.) Any one of numerous species of fossil brachipods of the genus Spirifer, or Delthyris, and allied genera, in which the long calcareous supports of the arms form a large spiral, or helix, on each side..

Tetrabranchiata :: Tetrabranchiata (n. pl.) An order of Cephalopoda having four gills. Among living species it includes only the pearly nautilus. Numerous genera and species are found in the fossil state, such as Ammonites, Baculites, Orthoceras, etc..

Asterolepis :: Asterolepis (n.) A genus of fishes, some of which were eighteen or twenty feet long, found in a fossil state in the Old Red Sandstone..

Lapidification :: Lapidification (n.) The act or process of lapidifying; fossilization; petrifaction.

Fossilized :: Fossilized (a.) Converted into a fossil; antiquated; firmly fixed in views or opinions.

Ornitholite :: Ornitholite (n.) The fossil remains of a bird.

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