Description
GENUINE OECOTRAUSTES GENICULARIS AMMONITE FOSSIL
This listing is for a genuine Oecotraustes genicularis ammonite fossil from the Middle Jurassic, Bajocian Stage, collected from Sengenthal, Bavaria, Germany. This is a carefully chosen fossil specimen, selected for its natural fossil character, geological interest, and classic European Jurassic appeal. The photograph shows the actual specimen you will receive, so please refer to the photo for the full sizing, proportions, preservation, colour, surface detail, matrix, and overall condition of this individual fossil.
This fossil is supplied with a Certificate of Authenticity lifetime guarantee generic card, giving confidence that the specimen is a genuine fossil and not a modern replica.
SPECIES AND FOSSIL TYPE
Oecotraustes genicularis is an extinct ammonite species, belonging to a group of marine cephalopods that lived in ancient seas during the Jurassic Period. Ammonites were related to modern squid, cuttlefish, octopus, and nautilus, but they lived inside coiled, chambered shells. The living animal occupied the final body chamber, while earlier chambers helped regulate buoyancy, allowing the ammonite to move through the water column.
Oecotraustes is generally associated with the ammonite order Ammonitida and is known from Middle Jurassic marine deposits. Ammonites such as this are highly valued by collectors because they combine attractive spiral shell form with strong scientific and geological interest. Their rapid evolution and widespread distribution make them important fossils for understanding and comparing Jurassic rock layers.
MIDDLE JURASSIC BAJOCIAN AGE
This fossil dates from the Bajocian Stage of the Middle Jurassic, an interval approximately 170 to 168 million years old. The Bajocian was a time of rich marine biodiversity, with ammonites, belemnites, bivalves, brachiopods, gastropods, echinoids, fish, and other marine organisms living in warm Jurassic seas.
The Bajocian is especially important in ammonite studies because many ammonite groups evolved quickly during this time. Their shell forms, ornamentation, whorl shape, and suture patterns allow palaeontologists and geologists to divide Middle Jurassic rocks into detailed time intervals. A fossil such as Oecotraustes genicularis is therefore not only an attractive display specimen, but also a fascinating example of Jurassic biostratigraphy and ancient marine life.
SENGENTHAL AND BAVARIAN GEOLOGY
This specimen comes from Sengenthal in Bavaria, Germany, a region known for fossil-bearing Jurassic sediments. During the Middle Jurassic, the area that is now Bavaria was influenced by shallow to moderately deep marine environments. Instead of the modern landscape, this region formed part of a warm European sea where carbonate mud, clay-rich sediment, and marine debris accumulated on the sea floor.
These sedimentary environments preserved the shells of ammonites and other marine animals. After death, ammonite shells could settle into soft sediment and become buried. Over millions of years, burial pressure, mineral-rich groundwater, and natural geological processes transformed the remains into fossils. Later uplift and erosion exposed these fossil-bearing rocks, allowing specimens like this to be recovered.
MORPHOLOGY AND NATURAL FEATURES
Oecotraustes ammonites are appreciated for their compact coiled shell form and distinctive Jurassic cephalopod character. Like other ammonites, the shell grew in a planispiral coil, with each whorl recording a stage in the animal’s life. Features such as whorl profile, umbilicus width, shell compression, ornamentation, chamber structure, and suture pattern are important in ammonite identification.
The species name genicularis is often associated with a shell form that may show angular or bent-looking growth characteristics in the body chamber, giving the fossil an interesting morphology when preserved. Depending on the individual specimen, visible features may include natural shell curvature, ribbing or growth lines, chamber traces, mineralisation, matrix, colour variation, surface texture, or natural geological wear. Please use the photograph to view the exact visible features of this fossil, as the image shows the actual specimen supplied.
ANCIENT JURASSIC MARINE LIFE
During life, this Oecotraustes genicularis ammonite would have been part of a diverse Middle Jurassic marine ecosystem. Ammonites were active swimming cephalopods, using their chambered shells to control buoyancy and move through the water. They likely fed on small marine animals, planktonic organisms, or scavenged food, while also forming part of the food chain for larger predators such as fish and marine reptiles.
The coiled shell was both protective and functional, allowing the animal to grow while maintaining balance in the water. After death, the shell settled onto the sea floor and was gradually buried in sediment, beginning the fossilisation process that preserved it for millions of years.
COLLECTOR DISPLAY AND AUTHENTICITY
This Oecotraustes genicularis ammonite fossil from Bavaria is ideal for fossil collectors, geology enthusiasts, natural history displays, educational collections, cabinet specimens, and anyone interested in genuine Jurassic fossils. It is particularly suitable for collectors of ammonites, fossil cephalopods, German fossils, Middle Jurassic specimens, Bajocian fossils, and scientifically interesting marine invertebrates.
The fossil shown in the photograph is the actual specimen you will receive. Please check the photo carefully for full sizing and condition details, including any natural cracks, matrix, mineralisation, colour variation, preparation marks, surface wear, or other natural features. These characteristics are normal in genuine fossils and help demonstrate their long geological history.
INCLUDED WITH THIS SPECIMEN
Your fossil will be supplied as a genuine specimen with a Certificate of Authenticity lifetime guarantee generic card. This makes it suitable for personal collecting, educational use, geology teaching, natural history display, or as a thoughtful gift for fossil lovers, palaeontology enthusiasts, students, teachers, and collectors of ancient marine life.
Reviews
There are no reviews yet.