intricate formations

Zodiac:Libra – Promotes harmony

These impressive ammonites have been cut in half and both halves have been highly polished for optimal display

This stone doesn’t just protect — it empowers

Recommended Use:Carry daily to support emotional release and gentle self-discovery

Promicroceras Planicosta (Reynès, 1879) – Calcite Ammonite Fossil Mystic Stone intricate formationsA 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