Description
Genuine Docidoceras cylindricum Ammonite Fossil
This listing is for a genuine Docidoceras cylindricum ammonite fossil from Calvados, Normandy, France, dating to the Middle Jurassic, Middle Bajocian stage. This carefully chosen specimen is a desirable French ammonite fossil with strong geological interest, attractive natural detail, and classic Jurassic marine character. It is ideal for collectors of ammonites, French fossils, Jurassic fossils, Bajocian fossils, cephalopod fossils, natural history specimens, and display-ready prehistoric marine life.
The fossil shown in the photographs is the actual specimen you will receive. Full sizing and scale can be seen in the listing photos. This fossil is supplied with a Certificate of Authenticity lifetime guarantee generic card, giving reassurance that the specimen is genuine and carefully selected for collecting, gifting, display, and educational interest.
Fossil Type, Species and Classification
Docidoceras cylindricum is an extinct ammonite, a marine cephalopod related to modern squid, cuttlefish, octopus, and nautilus. Ammonites lived in ancient seas and possessed coiled, chambered shells divided internally by walls called septa. The living animal occupied the final body chamber, while the older chambers helped control buoyancy as the ammonite moved through the water.
Docidoceras is associated with Middle Jurassic ammonite faunas and is generally placed among ammonites of the order Ammonitida. The genus is valued by collectors for its classic coiled shell form, ribbed ornament, and importance within Bajocian marine fossil assemblages. As with many ammonites, shell shape, whorl section, rib spacing, rib strength, and overall coiling are important features used in recognising and comparing specimens.
The species Docidoceras cylindricum has a distinctive Jurassic ammonite character, with a compact coiled form that may show strong ribbing, rounded whorls, and natural shell sculpture depending on preservation. These features make it a collectable fossil for anyone interested in named ammonite species and European Jurassic palaeontology.
Middle Jurassic Bajocian Age
This specimen dates to the Middle Bajocian stage of the Middle Jurassic, approximately 168 to 170 million years ago. The Bajocian was an important interval in ammonite evolution, with diverse and rapidly changing ammonite faunas spreading through ancient marine environments. Because ammonites evolved quickly and were widely distributed, they are important index fossils used to date and correlate Jurassic rock layers.
During the Bajocian, marine ecosystems contained a wide variety of life, including ammonites, belemnites, bivalves, brachiopods, gastropods, echinoids, crinoids, fish, and marine reptiles. Ammonites such as Docidoceras were part of this rich marine world, swimming through Jurassic seas that covered large areas of what is now Europe.
Calvados, Normandy Geological Setting
This Docidoceras cylindricum ammonite comes from Calvados in Normandy, France, a region well known for Jurassic sedimentary rocks and marine fossils. Normandy has long been an important area for fossil collecting, with coastal and inland exposures preserving ammonites and other marine invertebrates from ancient sea-floor deposits.
During the Middle Jurassic, the area now known as Normandy lay beneath a warm marine environment. Sediments such as limestone, marl, clay, and carbonate-rich mud accumulated on the sea floor, gradually burying shells and other remains. Over millions of years, these sediments compacted and hardened, while mineralisation preserved the ammonite shell as a fossil. The resulting specimens provide a direct link to the marine ecosystems of Jurassic France.
Morphology and Display Features
Docidoceras ammonites are appreciated for their attractive coiled form and natural shell ornamentation. Depending on preservation, this fossil may show curved whorls, ribbing, whorl expansion, chamber structure, sediment infill, mineral staining, and natural surface texture. The ribbing and coiling give the ammonite strong visual appeal, making it suitable for both specialist fossil collections and general natural history displays.
As a genuine fossil specimen, it may display natural cracks, repairs, matrix traces, weathered areas, colour variation, compression, or surface wear consistent with ancient burial and geological preservation. These characteristics are part of the fossil’s natural individuality and reflect its long history within the Middle Jurassic sediments of France.
Certificate of Authenticity
This fossil is a genuine specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The certificate provides reassurance that the item supplied is an authentic fossil specimen and not a modern replica or cast.
Collectable French Jurassic Ammonite
A genuine Docidoceras cylindricum ammonite from the Middle Bajocian of Calvados, Normandy, France, is a desirable addition to any fossil collection. It combines a named ammonite species, a classic French Jurassic locality, attractive natural morphology, and strong geological context. This specimen is well suited for collectors of ammonites, Jurassic marine fossils, French fossils, cephalopod fossils, educational geology displays, and authentic natural history pieces.
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