Lytoceras argonauticeras Ammonite Fossil France Cretaceous with COA

Description

Lytoceras argonauticeras Ammonite Fossil

A Genuine Lower Cretaceous Fossil from France

This authentic ammonite fossil is identified as Lytoceras argonauticeras and comes from southeastern France. It dates to the Upper Aptian interval of the Lower Cretaceous, making it a tangible remnant of a marine ecosystem more than 110 million years old. The listing photographs show the exact specimen offered for sale, allowing you to assess its coiled form, natural preservation, matrix and individual surface features. Full dimensions are provided in the dedicated sizing photograph.

Upper Aptian Geology

The Aptian is a stage of the Early Cretaceous Period, spanning approximately 125 to 113 million years ago. During the later Aptian, the region that is now southeastern France formed part of a complex marine realm influenced by the developing Tethys Ocean. Shallow platforms, deeper basins and submarine slopes created varied habitats in which abundant marine organisms lived and died. Fine sediment accumulated on the seafloor and, over geological time, was compacted and mineralised into fossil-bearing rock.

Southeastern France is internationally known for its richly fossiliferous Lower Cretaceous sequences. Ammonites from these deposits have played an important role in comparing rock layers and refining the chronology of the Cretaceous. A specimen with a recorded stage and regional provenance retains meaningful geological context, linking it to a particular chapter in the evolution of the Tethyan seas.

About Lytoceras argonauticeras

Lytoceras belongs to a long-ranging group of ammonites noted for evolute coiling, in which the successive whorls overlap only slightly and much of the earlier shell remains visible. Lytoceratid shells commonly have rounded whorl sections and delicate growth-related ornament. This open, elegant coiling distinguishes them from many more tightly wound ammonite groups and makes them attractive subjects for fossil collections and palaeontological study.

The living ammonite was a marine cephalopod related to modern squid, cuttlefish and nautiluses. Its soft body occupied the outer body chamber, while the older part of the shell was divided into sealed chambers by internal walls called septa. By regulating fluids and gases within the chambered shell, the animal could manage buoyancy in the water. The intricate lines created where the septa met the shell wall, known as sutures, are important features used in ammonite classification.

Ammonites evolved rapidly, occupied broad geographical areas and were abundant in many ancient seas. These qualities make them valuable index fossils for correlating marine sedimentary rocks. Lytoceras argonauticeras therefore combines visual appeal with scientific interest as evidence of Early Cretaceous cephalopod diversity.

Natural Condition

This fossil has undergone burial, mineral replacement, compaction, erosion and discovery. Natural matrix, weathering, colour variation, fine cracks, minor losses or irregular surfaces may be present and form part of the specimen’s geological history. They should not be interpreted as modern manufacturing defects. Please inspect all photographs closely, as they provide the most accurate guide to the fossil’s condition and appearance. The specimen pictured is the individual you will receive, and no substitute will be sent.

For Collectors and Education

This Upper Aptian ammonite is a strong addition to a Cretaceous fossil collection, geology cabinet, natural-history display or educational study set. Its named species and southeastern French provenance make it particularly suitable for collectors of European ammonites, Tethyan fossils, lytoceratids or marine cephalopods. It may also appeal as a thoughtful gift for a palaeontology enthusiast, geology student or admirer of prehistoric ocean life.

Authenticity and Provenance

This is a carefully selected genuine fossil specimen. It includes a generic Certificate of Authenticity card with a lifetime guarantee of authenticity. The documented provenance is Upper Aptian, Lower Cretaceous, southeastern France. Retaining these details with the fossil will preserve an important part of its scientific and historical value. The photographs display the actual Lytoceras argonauticeras offered here, while the sizing image supplies the measurements needed for storage or display planning.