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Encrinus :: Encrinus (n.) A genus of fossil encrinoidea, from the Mesozoic rocks..

Fossilize :: Fossilize (v. t.) To convert into a fossil; to petrify; as, to fossilize bones or wood..

Graptolite :: Graptolite (n.) One of numerous species of slender and delicate fossils, of the genus Graptolites and allied genera, found in the Silurian rocks. They belong to an extinct group (Graptolithina) supposed to be hydroids..

Longmynd Rocks :: Longmynd rocks () The sparingly fossiliferous conglomerates, grits, schists, and states of Great Britain, which lie at the base of the Cambrian system; -- so called, because typically developed in the Longmynd Hills, Shropshire..

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

Bellerophon :: Bellerophon (n.) A genus of fossil univalve shells, believed to belong to the Heteropoda, peculiar to the Paleozoic age..

Exuviae :: Exuviae (n. pl.) The fossil shells and other remains which animals have left in the strata of the earth.

Echinite :: Echinite (n.) A fossil echinoid.

Cyathophylloid :: Cyathophylloid (n.) A fossil coral of the family Cyathophyllidae; sometimes extended to fossil corals of other related families belonging to the group Rugosa; -- also called cup corals. Thay are found in paleozoic rocks.

Proostracum :: Proostracum (n.) The anterior prolongation of the guard of the phragmocone of belemnites and allied fossil cephalopods, whether horny or calcareous. See Illust. of Phragmocone..

Teleosaur :: Teleosaur (n.) Any one of several species of fossil suarians belonging to Teleosaurus and allied genera. These reptiles are related to the crocodiles, but have biconcave vertebrae..

Turrilite :: Turrilite (n.) Any fossil ammonite of the genus Turrilites. The shell forms an open spiral with the later whorls separate.

Fossilized :: Fossilized (imp. & p. p.) of Fossiliz.

Capstone :: Capstone (n.) A fossil echinus of the genus Cannulus; -- so called from its supposed resemblance to a cap.

Hippurite :: Hippurite (n.) A fossil bivalve mollusk of the genus Hippurites, of many species, having a conical, cup-shaped under valve, with a flattish upper valve or lid. Hippurites are found only in the Cretaceous rocks..

Laminarite :: Laminarite (n.) A broad-leafed fossil alga.

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..

Rhyncholite :: Rhyncholite (n.) A fossil cephalopod beak.

Ambrite :: Ambrite (n.) A fossil resin occurring in large masses in New Zealand.

Archaeopteryx :: Archaeopteryx (n.) A fossil bird, of the Jurassic period, remarkable for having a long tapering tail of many vertebrae with feathers along each side, and jaws armed with teeth, with other reptilian characteristics..

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