RARE Platypleuroceras brekispina Ammonite Fossil – Jurassic Black Ven Dorset UK, Lower Lias

Description A beautifully preserved and extremely rare specimen of Platypleuroceras brekispina, discovered in the Black Ven Marls of the Lower Lias at the iconic fossil site of Black Ven, Lyme Regis, Dorset, United Kingdom. This specimen was found by our experienced team members Alister and Alison on 05 March 2024 and has been professionally cleaned, prepped, and treated by Alison. Platypleuroceras brekispina is a distinctive species of Early Jurassic ammonite, recognised for its broad shell and unusually strong ribbing, sometimes bearing short spines or tubercles. Its occurrence in the fossil record is relatively uncommon, making high-quality examples highly desirable to both collectors and researchers. Fossil Type: Ammonite (extinct marine cephalopod) Species: Platypleuroceras brekispina Geological Age: Lower Jurassic – Sinemurian Stage, Lower Lias Formation: Black Ven Marls, Charmouth Mudstone Formation Depositional Environment: This ammonite was preserved in fine-grained marine mudstone deposited in a calm, offshore setting during the Early Jurassic. Frequent anoxic conditions contributed to the exceptional preservation of shell structure and detail. Morphological Features: Strong, angular ribbing across flanks Broad, evolute coiling Slightly keeled or rounded venter Occasional presence of small spines or tubercles on ribs Notable: Rare ammonite species from the world-famous Black Ven locality Excellent preservation and detail Discovered and prepared by our in-house team with full provenance The photo shows the actual specimen you will receive Authenticity: All of our fossils are 100% genuine natural specimens and come with a Certificate of Authenticity. Please refer to the image and 1cm scale cube for accurate sizing.   This rare Platypleuroceras brekispina ammonite from Lyme Regis offers a captivating glimpse into Jurassic marine life and is a standout piece for any fossil collection or museum-grade display.