"Human Biology Lab Activities&amp"

Blue fluorapatite, pure crystalline, Moh's hardness of 5.

Ammonites grew their shells from calcium carbonate and grew constantly throughout their life span. A relative of octopi and squids today, ammonites swam through the open ocean, preying on smaller marine animals.

Eisco labs prehistoric skulls - premium set of six Neaderathal skulls. Set consists of Afarenis cranium, Africanus cranium, Habilis cranium, Erectus cranium, Neanderthalensis cranium and Steinheim skull.