Fossil ammonite in matrix - Fossil fragment - Perisphinctes in Nodulo - Madagascar - 134 mm - 113 mm





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Description from the seller
Ammonite fossil of the genus Perisphinctes is embedded in its natural noduled, originating from Madagascar, one of the most renowned regions for the quality and preservation of Upper Jurassic fossils.
Main features
Geological period: Upper Jurassic (about 150-160 million years ago).
Origin: Madagascar, noted for its fossils preserved in limestone sediments.
Morphology
Planispiral shell with all the coils clearly visible.
Robust and regular ribbing, with an arrangement that bifurcates as it extends outward, typical of Perisphinctes ammonites.
The shell is perfectly preserved, showing a natural, unpolished structure that highlights the paleontological details.
Unique characteristics of the nodule
The fossil is enclosed in a calcareous nodule that protects its original structure, preserving the natural context in which it fossilized.
This nodulus offers an authentic view of the fossil as it was found in nature, ideal for paleontology enthusiasts and collectors.
Scientific information
Perisphinctes ammonites were marine cephalopods belonging to the subgroup of ammonoids. Fossils of this genus are used as guide fossils, essential for determining the age of rock layers in the Upper Jurassic.
Seller's Story
Ammonite fossil of the genus Perisphinctes is embedded in its natural noduled, originating from Madagascar, one of the most renowned regions for the quality and preservation of Upper Jurassic fossils.
Main features
Geological period: Upper Jurassic (about 150-160 million years ago).
Origin: Madagascar, noted for its fossils preserved in limestone sediments.
Morphology
Planispiral shell with all the coils clearly visible.
Robust and regular ribbing, with an arrangement that bifurcates as it extends outward, typical of Perisphinctes ammonites.
The shell is perfectly preserved, showing a natural, unpolished structure that highlights the paleontological details.
Unique characteristics of the nodule
The fossil is enclosed in a calcareous nodule that protects its original structure, preserving the natural context in which it fossilized.
This nodulus offers an authentic view of the fossil as it was found in nature, ideal for paleontology enthusiasts and collectors.
Scientific information
Perisphinctes ammonites were marine cephalopods belonging to the subgroup of ammonoids. Fossils of this genus are used as guide fossils, essential for determining the age of rock layers in the Upper Jurassic.

