collophane
collophane The name often given to a cryptocrystalline variety of apatite having the same formula Ca5(PO4)3.(OH,F,Cl), which commonly occurs in phosphatic sediments and as the principal mineral in fossilized bone and fish scales.
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blenny , blenny •Annie, ca'canny, canny, cranny, Danny, fanny, granny, nanny, tranny •Ariadne, Evadne •daphne •Agni, Cagney •acne, Arachne, hackney •hootenann… Scale (zoology) , scales The small bony or horny plates forming the body covering of fish and reptiles. The wings of some insects, notably the Lepidoptera (butterflies… Fossil fishes , Acanthodii (acanthodians) Class of primitive, fossil fish, characterized by the presence of a true bony skeleton (see BONE), a heterocercal tail fin,… Phosphorite , phosphorite A sedimentary rock rich in phosphate, usually in the form of carbonate hydroxyl fluorapatite (Ca10(PO4CO3)6F2–3). Phosphorites occur as n… Teleosts , Teleostei (teleost, teleostean) Somewhat loosely defined term (an infraclass or super-order according to some authors) that includes all the living b… Bone , bone Fairly early in the evolution of multicellular organisms it became an advantage to have a hard body component which could provide protection for…
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collophane