05534 - Top Beautiful Cut and Polished 2.21 Inch Septarian Nodule from South Morocco Apatite Precious collection of five nice

Precious collection of five nice teeth of this species of pterosaur

† Phacodus sp

Its chemical formula is Cu4SO4(OH)6

Chaledonized gastropods (specimen at fat left is 3

Beautiful association of Eremiasaurus tooth + unidentified bone in its natural matrix

05534 - Top Beautiful Cut and Polished 2.21 Inch Septarian Nodule from South Morocco Apatite Precious collection of five niceSeptarian concretions or septarian nodules, are concretions containing angular cavities or cracks, called "septaria". The word comes from the Latin word septum; "partition", and refers to the cracks separations in this kind of rock. Cracks are highly variable in shape and volume, as well as the degree of shrinkage they indicate. Although it has commonly been assumed that concretions grew incrementally from the inside outwards, the fact that radially