RARE 5.5″ Emileia brocchii Fossil Ammonite, Bajocian, Jurassic, Hungary, Genuine Specimen with COA

Description This listing presents a RARE 5.5″ Fossil Ammonite of Emileia brocchii from the Bajocian Stage of the Jurassic Period, collected from a classic locality in Hungary. This specimen is both scientifically significant and visually striking, representing an important genus in Middle Jurassic ammonite evolution. The fossil shown in the images is the exact specimen you will receive — chosen for its size, preservation, and detail. Scale Rule Squares / Cube = 1cm — please see photos for accurate measurements and multiple views.   Key Geological and Scientific Information: Species: Emileia brocchii Fossil Type: Ammonite (extinct marine cephalopod) Geological Period: Jurassic Geological Stage: Bajocian (Middle Jurassic) Location: Hungary Approximate Age: ~170–168 million years ago Order: Ammonitida Superfamily: Stephanoceratoidea Family: Otoitidae Described By: d’Orbigny, 1846   Morphology Features: Emileia brocchii is known for its large, strongly ribbed, and somewhat inflated shell, with ribs that bifurcate from pronounced tubercles near the umbilical shoulder and sweep outward to the venter. The whorls are broad, and the venter may show a slight keel or be rounded depending on preservation. This species is particularly noted for its robustness and ornamentation, making it a favourite among collectors and researchers.   Depositional Environment: The Bajocian marine environments of Hungary were part of the western Tethyan realm, consisting of shallow to mid-shelf carbonate platforms and marl-rich basins. These conditions were conducive to the flourishing of diverse ammonite faunas, including Emileia.   Biozone & Stratigraphy: Emileia brocchii is associated with the Emileia Zone, an important ammonite biozone in the lower Bajocian. Its presence allows fine-scale stratigraphic correlation across Europe, particularly in Tethyan and Sub-Mediterranean marine sequences.   Scientific Significance: The genus Emileia is key to understanding the diversification of ammonites during the Bajocian and serves as a marker in European biostratigraphy. E. brocchii in particular is one of the most recognisable and well-preserved species of the group, making this a scientifically valuable specimen.   Authenticity Guarantee: All our fossils are 100% genuine, selected and handled with scientific care. Each piece is accompanied by a Certificate of Authenticity, ensuring traceability and trust.   This impressive Emileia brocchii ammonite is a standout piece — perfect for serious fossil collectors, educators, and display collections focused on Jurassic marine life.