RARE 9″ Lewesiceras mantelii Fossil Ammonite | Lower Turonian Chalk | Cretaceous | Dover UK | Alice Purnell Collection

Description This listing features a RARE 9″ fossil ammonite, Lewesiceras mantelii, discovered in the iconic Chalk cliffs of Abbotts Cliff, Dover, United Kingdom. Dated to the Lower Turonian Stage of the Cretaceous Period, this stunning chalk-preserved cephalopod fossil is part of the renowned Alice Purnell Collection, noted for its exceptional curation and authenticity.   Geological & Palaeontological Details: Species: Lewesiceras mantelii Geological Period: Cretaceous Geological Stage: Lower Turonian (~93.9 to 89.8 million years ago) Locality: Abbotts Cliff, Dover, Kent, United Kingdom Depositional Environment: Deep marine chalk sea with pelagic sedimentation Order: Ammonitida Superfamily: Acanthoceratoidea Family: Acanthoceratidae Genus: Lewesiceras Biozone: Typically associated with the Mammites nodosoides and Lewesiceras peramplum zones Identification: Lewesiceras mantelii was formally described by d’Orbigny in the 19th century, and later studies have affirmed its diagnostic features in British chalk deposits   Morphological Features: Large, thick-shelled ammonite with moderate involution Prominent ribbing and subtle tubercles across the whorls Rounded venter and relatively compressed whorl section Excellent chalk preservation with clear suture lines and shell texture   Notable Information: Lewesiceras mantelii is a key biostratigraphic index fossil for the early Turonian and frequently appears in zonal frameworks of European Chalk successions Its presence helps correlate strata across southern England and northern France Highly sought after by collectors for both its scientific relevance and impressive size   Authenticity & Presentation: 100% genuine fossil specimen, not a replica Comes with a Certificate of Authenticity Photo shows the exact fossil you will receive Scale cube = 1cm for accurate size reference Part of the esteemed Alice Purnell Collection   This 9″ Lewesiceras mantelii chalk ammonite is a museum-grade fossil, combining scientific significance with natural beauty—a truly rare acquisition for collectors and enthusiasts.   All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity.