Ataxioceras hypselocyclum Ammonite Fossil Germany with COA

Description

Genuine Ataxioceras Ammonite Fossil

This genuine ammonite fossil is identified as Ataxioceras hypselocyclum and comes from Hausen an der Donau in Baden-Württemberg, Germany. It dates to the Hypselocyclum Zone of the Lower Kimmeridgian, Upper Jurassic, and is a carefully selected specimen with valuable species, biozone, age, and locality information. The photographs show the exact fossil offered for sale, so the ammonite pictured is the specimen you will receive.

Ataxioceras was an extinct marine cephalopod with a chambered, coiled shell. As the animal grew, it constructed progressively larger chambers around the outer whorl. The living ammonite occupied the final body chamber, while older sealed chambers contributed to buoyancy control. Ammonites were relatives of living squid, cuttlefish, and nautiluses, although they belonged to their own extinct branch.

Lower Kimmeridgian Geological Age

The Kimmeridgian is a stage within the Upper Jurassic Period. During the Lower Kimmeridgian, marine environments supported diverse ammonite communities and other sea life. Shells could settle on the sea floor after death and become buried within sediment. Compaction, mineralisation, and geological change then preserved some examples as fossils.

Ammonites evolved rapidly and were widely distributed through Jurassic seas. Their changing shell forms make them particularly useful to geologists for comparing sedimentary sequences and establishing relative ages. The documented Lower Kimmeridgian age gives this specimen a clear position within the Upper Jurassic succession.

Hypselocyclum Zone

The stated Hypselocyclum Zone provides finer biostratigraphic context within the Lower Kimmeridgian. A biozone is an interval of rock recognised through characteristic fossil assemblages, often using ammonites because of their rapid evolution and broad marine distribution.

The relationship between the species name Ataxioceras hypselocyclum and the named zone makes this specimen particularly engaging for a stratigraphic collection. It represents not only an identifiable ammonite but also a fossil tied to a recognised interval in geological time.

Hausen an der Donau, Baden-Württemberg

Hausen an der Donau lies in Baden-Württemberg in southern Germany, a region with extensive Jurassic sedimentary rocks and a strong fossil heritage. Provenance to a named locality adds meaningful context and makes the specimen suitable for a collection organised by German region, Upper Jurassic stage, ammonite genus, or biozone.

The specimen’s natural matrix, colour, mineral texture, small breaks, and differences in surface preservation reflect its long geological history. These are genuine characteristics of an ancient fossil rather than features of a manufactured replica.

Shell Form and Collectable Detail

Ataxioceras ammonites are studied through their coiling, whorl proportions, ribbing, and ornamentation. Examine the photographs for the visible whorls, shell outline, growth pattern, and preserved surface features on this individual piece. Changes in rib strength or direction around the whorl can provide important morphological detail.

Every fossil preserves a different balance of shell and surrounding rock. The multiple photographs provide useful views of the actual specimen and show its condition, proportions, and natural character more clearly than a generic description.

Exact Specimen and Authenticity

Full sizing is shown in the photographs, which provide the best scale information for this individual fossil. The images are not stock photographs and do not represent a similar example. They show the exact Ataxioceras hypselocyclum ammonite that will be supplied.

This is a genuine fossil specimen and includes a generic Certificate of Authenticity card with a lifetime guarantee. It has been carefully chosen for its identifiable shell form, Hypselocyclum Zone context, Lower Kimmeridgian age, and German provenance. It makes a distinctive addition to a cabinet collection, educational display, office, study, or gift for anyone interested in authentic Upper Jurassic fossils and ammonite biostratigraphy.