Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil Shungite Sacred Geometry Tool Cancer – Emotional depth and

Cancer – Emotional depth and intuition

and deep intuitive work

Naturally Unique Every slice differs in colour

Earth – Stability and balance

metallic crystal with golden-bronze tones and flashes of iridescent blues

Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil Shungite Sacred Geometry Tool Cancer – Emotional depth andA 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