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Late Cretaceous (70 m
" - Jeff Meldrum
Bothriolepis was a bottom feeding armored fish that lived in brackish water and seas
Only in oblique light do the Haarlem specimen's feather imprints show up at all
Aragonite Crystals Deinonychus Late Cretaceous (70 mNOTE THAT YOU WILL RECEIVE A SPECIMEN OF EQUAL OR BETTER QUALITY THAN THE ONE SHOWN Aragonite is a carbonate mineral, one of the two common, naturally occurring polymorphs of calcium carbonate, CaCO3. The other polymorph is the mineral calcite. Aragonite's crystal lattice differs from that of calcite, resulting in a different crystal shape, an orthorhombic system with acicular crystals. Repeated twinning results in pseudo hexagonal forms. Aragonite
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