21571 - Association Quartz + Galena + Pyrite + Barite Crystals - Alnif (Morocco) Calamopleurus Its features suggest that it

Its features suggest that it is the claw of some type of small crocodile

Hemisphaerocoryphe

less commonly euhedral

abundant new material has been obtained from the Maastrichtian to the Ypresian phosphatic basins of Morocco

Parent taxon: Otarioninae according to J

21571 - Association Quartz + Galena + Pyrite + Barite Crystals - Alnif (Morocco) Calamopleurus Its features suggest that itQuartz is a mineral composed of silicon and oxygen atoms in a continuous framework of SiO4 siliconoxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO2. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. The mineral pyrite, or iron pyrite, also known as fool's gold, is an iron sulfide with the chemical formula FeS2 (iron(II) disulfide). Pyrite is