Aragonite Crystals Ouranosaurus Aegyptopithecus was discovered by Elwyn

Aegyptopithecus was discovered by Elwyn Simons in 1965 in the Jebel Qatrani Formation

In general Machairodus was similar in size to a modern lion or tiger

Specs: Camarasaurus sp

polyodon to the exclusion of other alligatorines

Confuciusornis sanctus ("the sacred bird of Confucius") is the earliest known beaked bird

Aragonite Crystals Ouranosaurus Aegyptopithecus was discovered by ElwynNOTE 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