Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil grounding and protective stone and enhance their energy

and enhance their energy

Known for its calming and nurturing energy

Aragonite (brown)

and the effect of other crystals

What’s Inside the Zeolite Crystal Cluster Pick of the Week

Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil grounding and protective stone and enhance their energyA beautifully preserved specimen of Promicroceras planicosta, fully replaced by calcite. This ammonite displays fine ribbing and its characteristic planispiral coiling. As a key index fossil of the Lower Jurassic Sinemurian, Promicroceras is highly significant for ammonite biostratigraphy in the UK. An excellent choice for collectors, researchers, or curated display. Stratigraphic Context Lower Lias Group, Obtusum Zone Chronostratigraphy Lower