05534 - Top Beautiful Cut and Polished 2.21 Inch Septarian Nodule from South Morocco Apatite Trilobites et Graptolites) dans le

Trilobites et Graptolites) dans le Cambro-Ordovicien du Zemmour

Beautiful example of 24

Osteichthyes - Ostariophysi - Gonorhynchidae

Two new species of Trochurinae trilobites from the Middle Devonian (Eifelian) of Southern Morocco

05534 - Top Beautiful Cut and Polished 2.21 Inch Septarian Nodule from South Morocco Apatite Trilobites et Graptolites) dans leSeptarian 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