Coquinas are type of sedimentary rocks that are formed from various parts and fragments of shells that come from animals like molluscs, brachiopods, and other invertebrates. The sedimentation may either be mixed with other substances&hellip
Coquinas are type of sedimentary rocks that are formed from various parts and fragments of shells that come from animals like molluscs, brachiopods, and other invertebrates. The sedimentation may either be mixed with other substances&hellip