RARE Fossil Heteromorph Ammonite Scaphites equalis – Lower Cenomanian, Cretaceous – Seine-Maritime, France – Alice Purnell Collection

Description RARE HETEROMORPH AMMONITE – SCAPHITES EQUALIS Geological Age: Lower Cenomanian, early Late Cretaceous (~100.5–97 million years ago) Location: Seine-Maritime, Normandy, France Stratigraphy: Likely within the basal Cenomanian chalk or marly limestone beds From the Alice Purnell Collection Supplied with a Certificate of Authenticity This is a beautiful and rare fossil ammonite specimen of Scaphites equalis, a heteromorph ammonite from the Lower Cenomanian strata of Seine-Maritime, a classic locality in the Normandy region of France. Known for its marine deposits and well-preserved Cretaceous fauna, this site yields ammonites of excellent scientific and aesthetic value. GEOLOGICAL & TAXONOMIC DETAILS: Species: Scaphites equalis Age: Lower Cenomanian (Early Late Cretaceous) Formation: Likely derived from the basal chalk or associated marlstone beds of the English/French transgressive chalk platform Depositional Environment: Marine open shelf with moderate depth, rich in planktonic and benthic life Low sedimentation rates allowed for excellent fossil preservation Zone & Biozone: Typically associated with the Mantelliceras mantelli ammonite biozone in Cenomanian sequences Morphological Features: Heteromorph coiling with an initial tightly coiled whorl transitioning into a partially uncoiled body chamber The shell exhibits fine ribbing and tuberculate ornamentation Believed to have had a partially free-swimming or drifting life habit near the sea floor Order: Ammonitida Superfamily: Scaphitoidea Family: Scaphitidae Notable: Scaphites is one of the most recognisable heteromorph ammonite genera, and S. equalis is a diagnostic species of the Cenomanian Its unique coiling makes it a favourite among collectors and researchers alike Well-preserved specimens like this are uncommon in the commercial fossil trade SPECIMEN DETAILS & FEATURES: This particular fossil has been carefully chosen for its distinct coiling, surface preservation, and excellent contextual clarity. The scale rule (1cm cube squares) in the photo allows for full visual assessment of size and proportion. You will receive the exact specimen shown in the photos. This fossil is part of the prestigious Alice Purnell Collection, known for its curated selection of well-documented, authentic Mesozoic fossils. WHAT’S INCLUDED: Fossil: Scaphites equalis Age: Lower Cenomanian (~100.5–97 Ma) Locality: Seine-Maritime, France Geological Setting: Chalk platform marine deposit Certificate of Authenticity 1cm scale cube photo reference for size verification Secure, careful packaging for safe transit SUMMARY: This rare Scaphites equalis heteromorph ammonite from the Lower Cenomanian of France is a standout addition to any fossil collection, with exceptional scientific and visual appeal. Its age, locality, and preservation make it an excellent display or educational piece for both seasoned collectors and fossil enthusiasts.