20801 - Top Beautiful Huge 5.41 Inch Calcite Crystals from South Morocco - New Location Hybodus Dyrosauridae) from the Lower Eocene

Dyrosauridae) from the Lower Eocene of North Africa

interesting conclusions can also be drawn about the vegetation of the moment

Not only the tooth belongs to an inusual raptor family

Reedops sp: Fossilworks (Paleobiology Database)

Impressive natural association of 10 huge vertebrae of this unidentified mosasaur species in its phosphatic matrix

20801 - Top Beautiful Huge 5.41 Inch Calcite Crystals from South Morocco - New Location Hybodus Dyrosauridae) from the Lower EoceneHuge and sharp crystals of calcite from a new location unpublished in the mountains of the Erich region, Morocco. Calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (CaCO3). The Mohs scale of mineral hardness, based on scratch hardness comparison, defines value 3 as "calcite". Other polymorphs of calcium carbonate are the minerals aragonite and vaterite. Aragonite will change to calcite over timescales of days or less at