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In general Machairodus was similar in size to a modern lion or tiger
Brachiosaurus was about 85 feet (26 m) long
well within the ape range
Apatosaurus tail vertebra
The tail and posterior part of the trunk had no armor
Aragonite Crystals Ankylosaurus In general Machairodus was similarNOTE 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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