Costileioceras sinon Ammonite Fossil Jurassic Germany Genuine COA Aalenian Baden Wurttemberg Geisingen Collectable Display
£ 12.60
GENUINE COSTILEIOCERAS SINON AMMONITE FOSSILThis listing is for a genuine Costileioceras sinon ammonite fossil from Tongrube
Geisingen am Wartenberg, Baden-Württemberg, Germany. Dating from the Jurassic, Middle Aalenian, this carefully chosen specimen represents an authentic marine cephalopod from an important European Jurassic fossil locality. The photograph shows the actual fossil you will receive, allowing you to view its natural preservation, shape, surface texture, colour, matrix and overall character before purchase.This fossil is supplied with a Certificate of Authenticity lifetime guarantee generic card, confirming that it is a genuine specimen. Full sizing details can be seen in the photo. FOSSIL TYPE AND SPECIESCostileioceras sinon is an ammonite, part of an extinct group of shelled marine cephalopods related to modern squid, octopus and cuttlefish. Ammonites lived in ancient seas throughout much of the Mesozoic Era and are among the most recognisable fossils from the Jurassic Period. Their attractive coiled shells, scientific value and wide variety of forms make them highly desirable to collectors, educators and natural history enthusiasts.The ammonite shell was divided internally into chambers. The animal lived in the final body chamber, while the older chambers helped control buoyancy in the water. As the ammonite grew, new chambers were added, creating the spiral shell form that makes these fossils so distinctive. Costileioceras ammonites are associated with the Aalenian stage of the Jurassic and are of interest to collectors because of their strong stratigraphic context and characteristic ribbed shell appearance. GEOLOGICAL AGE AND AALENIAN SETTINGThis specimen dates to the Middle Aalenian, within the Jurassic Period, approximately 172 million years old. The Aalenian is an important stage between the Early Jurassic Toarcian and the Middle Jurassic Bajocian. During this interval, large areas of what is now central Europe were covered by warm, shallow marine seas. These waters supported a rich ecosystem of ammonites, belemnites, bivalves, brachiopods, gastropods, crinoids and other marine invertebrates.Ammonites from the Aalenian are especially valued because they evolved rapidly and are useful for dating and comparing Jurassic rock layers. Fossils such as Costileioceras sinon help represent a period of changing ammonite faunas and shifting marine environments across Europe. This makes the specimen appealing not only as a display fossil, but also as a piece with genuine geological and palaeontological interest. TONGRUBE GEISINGEN AM WARTENBERG LOCALITYThis fossil comes from Tongrube Geisingen am Wartenberg in Baden-Württemberg, Germany, a locality associated with Jurassic clay and marine sedimentary deposits. The word “Tongrube” refers to a clay pit, and such exposures are often important sources of fossils because they reveal sediment layers that were once part of ancient seabeds.The Geisingen area lies within a region of Germany well known for Jurassic geology. Fossils from Baden-Württemberg are highly regarded by collectors because southern Germany has produced many classic ammonites and other marine fossils from the Jurassic seas of Europe. A labelled specimen from this locality has excellent display and collection value, especially for anyone interested in German ammonites, European Jurassic fossils or Aalenian marine life. AMMONITE MORPHOLOGY AND NATURAL FEATURESAmmonites such as Costileioceras sinon typically show the classic planispiral coiled shell form, with whorls arranged around a central spiral. Depending on preservation, visible features may include ribbing, whorl curvature, shell outline, chamber traces, natural matrix, mineralisation and surface texture. Ribbed ammonites are particularly attractive because the ornamentation helps emphasise the shell’s growth pattern and gives the fossil a strong visual presence.As a genuine natural fossil, each specimen is unique. Variations in preservation, colour, surface detail, matrix, compression, mineralisation and edge wear are part of the fossil’s individual character. These natural features reflect both the original shell structure and the geological processes that preserved the ammonite for millions of years. COLLECTING AND DISPLAY APPEALThis Costileioceras sinon ammonite fossil is ideal for collectors of Jurassic ammonites, German fossils, Baden-Württemberg fossils, Aalenian ammonites, European fossils and natural history display specimens. It would make an excellent addition to a fossil cabinet, geology collection, educational display, school teaching set or natural history gift.The specimen has been carefully chosen and photographed so the buyer can clearly see the actual fossil being supplied. Its appeal comes from the combination of named species, genuine authenticity, Jurassic age, European locality and attractive ammonite form. AUTHENTICITY AND PRESENTATIONThis is a 100% genuine fossil specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The listing photograph shows the actual specimen you will receive, and full sizing can be checked from the photo. The fossil is suitable for display, study, collecting or gifting.
Geisingen am Wartenberg, Baden-Württemberg, Germany. Dating from the Jurassic, Middle Aalenian, this carefully chosen specimen represents an authentic marine cephalopod from an important European Jurassic fossil locality. The photograph shows the actual fossil you will receive, allowing you to view its natural preservation, shape, surface texture, colour, matrix and overall character before purchase.This fossil is supplied with a Certificate of Authenticity lifetime guarantee generic card, confirming that it is a genuine specimen. Full sizing details can be seen in the photo. FOSSIL TYPE AND SPECIESCostileioceras sinon is an ammonite, part of an extinct group of shelled marine cephalopods related to modern squid, octopus and cuttlefish. Ammonites lived in ancient seas throughout much of the Mesozoic Era and are among the most recognisable fossils from the Jurassic Period. Their attractive coiled shells, scientific value and wide variety of forms make them highly desirable to collectors, educators and natural history enthusiasts.The ammonite shell was divided internally into chambers. The animal lived in the final body chamber, while the older chambers helped control buoyancy in the water. As the ammonite grew, new chambers were added, creating the spiral shell form that makes these fossils so distinctive. Costileioceras ammonites are associated with the Aalenian stage of the Jurassic and are of interest to collectors because of their strong stratigraphic context and characteristic ribbed shell appearance. GEOLOGICAL AGE AND AALENIAN SETTINGThis specimen dates to the Middle Aalenian, within the Jurassic Period, approximately 172 million years old. The Aalenian is an important stage between the Early Jurassic Toarcian and the Middle Jurassic Bajocian. During this interval, large areas of what is now central Europe were covered by warm, shallow marine seas. These waters supported a rich ecosystem of ammonites, belemnites, bivalves, brachiopods, gastropods, crinoids and other marine invertebrates.Ammonites from the Aalenian are especially valued because they evolved rapidly and are useful for dating and comparing Jurassic rock layers. Fossils such as Costileioceras sinon help represent a period of changing ammonite faunas and shifting marine environments across Europe. This makes the specimen appealing not only as a display fossil, but also as a piece with genuine geological and palaeontological interest. TONGRUBE GEISINGEN AM WARTENBERG LOCALITYThis fossil comes from Tongrube Geisingen am Wartenberg in Baden-Württemberg, Germany, a locality associated with Jurassic clay and marine sedimentary deposits. The word “Tongrube” refers to a clay pit, and such exposures are often important sources of fossils because they reveal sediment layers that were once part of ancient seabeds.The Geisingen area lies within a region of Germany well known for Jurassic geology. Fossils from Baden-Württemberg are highly regarded by collectors because southern Germany has produced many classic ammonites and other marine fossils from the Jurassic seas of Europe. A labelled specimen from this locality has excellent display and collection value, especially for anyone interested in German ammonites, European Jurassic fossils or Aalenian marine life. AMMONITE MORPHOLOGY AND NATURAL FEATURESAmmonites such as Costileioceras sinon typically show the classic planispiral coiled shell form, with whorls arranged around a central spiral. Depending on preservation, visible features may include ribbing, whorl curvature, shell outline, chamber traces, natural matrix, mineralisation and surface texture. Ribbed ammonites are particularly attractive because the ornamentation helps emphasise the shell’s growth pattern and gives the fossil a strong visual presence.As a genuine natural fossil, each specimen is unique. Variations in preservation, colour, surface detail, matrix, compression, mineralisation and edge wear are part of the fossil’s individual character. These natural features reflect both the original shell structure and the geological processes that preserved the ammonite for millions of years. COLLECTING AND DISPLAY APPEALThis Costileioceras sinon ammonite fossil is ideal for collectors of Jurassic ammonites, German fossils, Baden-Württemberg fossils, Aalenian ammonites, European fossils and natural history display specimens. It would make an excellent addition to a fossil cabinet, geology collection, educational display, school teaching set or natural history gift.The specimen has been carefully chosen and photographed so the buyer can clearly see the actual fossil being supplied. Its appeal comes from the combination of named species, genuine authenticity, Jurassic age, European locality and attractive ammonite form. AUTHENTICITY AND PRESENTATIONThis is a 100% genuine fossil specimen and includes a Certificate of Authenticity lifetime guarantee generic card. The listing photograph shows the actual specimen you will receive, and full sizing can be checked from the photo. The fossil is suitable for display, study, collecting or gifting.
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