Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil Emotional Resilience Stone or those navigating intellectually demanding

or those navigating intellectually demanding environments

a milky opalescent variety

These unique carbon molecules

ideal for decision-making or deep study

Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil Emotional Resilience Stone or those navigating intellectually demandingA 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