Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil crystal bracelet display and irrational mood swings

and irrational mood swings

balancing energy

Provide grounding and energetic stability

The polished exterior reveals beautiful swirling tones of turquoise

making every piece unique

Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil crystal bracelet display and irrational mood swingsA 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