Description
Rare Progeronia ernesti Fossil Ammonite
This is a rare and carefully chosen Progeronia ernesti fossil ammonite from the Lower Kimmeridgian stage of the Jurassic Period, collected from Graffenberg, Bavaria, Germany. Measuring approximately 4 inches, with full sizing shown in the photograph, this is a desirable European Jurassic ammonite specimen with strong collector appeal. The photograph shows the actual fossil you will receive, allowing buyers to view the real preservation, shape, colour, texture and natural character of the piece before purchase.
This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. It is ideal for collectors of rare ammonites, German fossils, Jurassic marine fossils, natural history specimens and display-quality palaeontology pieces.
Geology and Jurassic Age
Progeronia ernesti dates from the Lower Kimmeridgian, part of the Late Jurassic, approximately 157 to 154 million years old. During this time, much of southern Germany and Bavaria lay within a warm marine setting connected to the ancient Tethys Ocean. These shallow to moderately deep Jurassic seas supported a diverse ecosystem of ammonites, belemnites, bivalves, brachiopods, echinoids, crinoids, fish and marine reptiles.
The Kimmeridgian is an important stage in Jurassic geology because its marine sediments preserve abundant ammonite faunas that are useful for dating and correlating rock layers. Ammonites evolved quickly and spread widely through ancient seas, making them one of the most valuable fossil groups for understanding Jurassic biostratigraphy and palaeoenvironmental change.
Fossil Type and Species
This specimen is an ammonite, an extinct marine cephalopod related to modern squid, cuttlefish and nautilus. Ammonites lived inside coiled, chambered shells. The animal occupied the final outer chamber, while the inner chambers helped regulate buoyancy, allowing it to move through the Jurassic water column.
Species: Progeronia ernesti
Genus: Progeronia
Order: Ammonitida
Class: Cephalopoda
Phylum: Mollusca
Progeronia ernesti is a collectable Late Jurassic ammonite species, valued for its attractive spiral shell form and geological age. Ammonites of this period show a wide variety of shell shapes, ribbing styles and whorl structures, making them highly interesting to both fossil collectors and palaeontology enthusiasts.
Morphology and Display Features
This 4 inch Progeronia ernesti ammonite displays the classic coiled ammonite form that makes these fossils instantly recognisable. The spiral shell records the growth of the animal through life, with each whorl representing a stage of shell development. Features such as whorl shape, ribbing, shell curvature and surface ornament are important in ammonite identification and add to the visual appeal of the fossil.
The specimen has been selected as a display-worthy piece, suitable for a fossil cabinet, educational collection, natural history display or decorative geology setting. Its size makes it easy to display while still offering the presence and detail expected from a quality Jurassic ammonite.
Graffenberg, Bavaria Fossil Locality
Graffenberg in Bavaria, Germany, is associated with Jurassic marine deposits that record ancient seabed environments from the Late Jurassic. Fossils from this region are prized by collectors because German Jurassic localities are known for their well-preserved marine invertebrates and scientifically important ammonite faunas.
During the Lower Kimmeridgian, sediment accumulated on the seafloor, burying shells and hard parts from marine animals. Over millions of years, these remains became fossilised through mineral replacement and compaction within the surrounding rock. This process preserved the ammonite’s natural shell form as a lasting record of life in the Jurassic seas of Europe.
Authenticity and Collector Appeal
This Progeronia ernesti ammonite is a genuine fossil specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The fossil shown in the photograph is the exact specimen supplied, so buyers can purchase with confidence knowing they will receive the piece pictured.
As with all genuine fossils, natural cracks, mineralisation, matrix, surface marks, preparation marks, colour variation and age-related wear may be present. These features are normal in authentic fossil specimens and form part of the fossil’s individual geological history. This rare Lower Kimmeridgian ammonite from Graffenberg, Bavaria is an excellent choice for collectors seeking a genuine Jurassic fossil with named species identification, strong display value and classic European locality appeal.
