Two Ammonites - Fossilised animal - Aioloceras (Cleoniceras) sp. - 135 mm - 135 mm
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Aioloceras (Cleoniceras) sp., two ammonites from Madagascar, one lucidamente polished (135 × 135 × 30 mm) and the other natural (105 × 90 × 30 mm), from the Lower Cretaceous (about 145–100.5 million years ago); total weight 1 kg.
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Description from the seller
Beautiful combination of a Cleoniceras weighing 290 grams in its natural state and an Ammonite, weighing 580 grams, with warm amber colors.
Cleoniceras besaiei is an extinct species of ammonite, a marine cephalopod that lived during the Cretaceous period, about 100 million years ago. This fossil is particularly valued for its beauty, especially when it preserves mother-of-pearl and the intricate sutures that are clearly visible.
The shell of Cleoniceras besaiei is generally subcircular or elliptical in shape, with a cross-section that can be slightly compressed. The spiral of the shell follows a continuous and regular curve.
The specimens can vary greatly in size, but the shell is usually of moderate size compared to other ammonites, with a diameter that can reach a few centimeters.
The mother-of-pearl of Cleoniceras besaie, if well preserved, is bright and iridescent, showing reflections that range from green to blue and violet. This inner layer is composed of aragonite, a form of calcium carbonate that gives the shell a special luster and the characteristic iridescence.
A very important group from a fossil perspective belonging to the Devonian-Cretaceous period. Completely extinct at the end of the Cretaceous, it is believed to derive from ancestors belonging to the Nautiloidea. Although part of the cephalopod mollusks group, ammonites are distinguished mainly by the shape of their shell, characterized by bilateral symmetry. The shell is divided into an unsegmented anterior region where the animal resided and a posterior region divided into chambers. The line of closure between the chambers is very indicative and facilitates species recognition. Additionally, its outline, initially quite simple and linear in early forms, gradually changed until the more recent ammonites, which are often very jagged and almost baroque. Sizes vary: they start from a few centimeters but can reach up to 10 centimeters. Since these are entirely extinct marine species, we can only hypothesize about their lifestyle. It is believed that forms with smooth shells externally were swimmers, often predators. Species with more ornate and costate shells were predominantly benthic.
Very interesting lot: two precious objects... for collectors or for simple lovers of unusual design and furniture items.
Pedestal not included.
Happy bidding.
Cleoniceras lucidata measurement: 135x135x30 mm
Natural cleoniceras measurement: 105×90×30 mm
Seller's Story
We deal with naturalistic objects in
Prevalence coming from the fascinating
marine world, but by enthusiasts and
Lovers of enchanting facets.
Of life, we also propose minerals and.
metaphysical stones, taxidermies, fossils, and
decorative objects
A continuous journey through time and...
Space for the search for testimonies.
Precious.
Passion is the fire that fuels.
Our choices: collaborations with the
Major importers from exotic countries.
but also travels to discover sought-after destinations
objects
Ongoing research of new developments and
Our increasingly refined aesthetic.
main objectives
Just observe like a collector.
He manages the objects in his display case.
As soon as he/she/they take(s) one in hand, the
His or her inspired gaze seems to pierce through.
The object is to lose oneself in its distances.
Here lies the magical side of the collector.
Walter Benjamin
Translated by Google TranslateBeautiful combination of a Cleoniceras weighing 290 grams in its natural state and an Ammonite, weighing 580 grams, with warm amber colors.
Cleoniceras besaiei is an extinct species of ammonite, a marine cephalopod that lived during the Cretaceous period, about 100 million years ago. This fossil is particularly valued for its beauty, especially when it preserves mother-of-pearl and the intricate sutures that are clearly visible.
The shell of Cleoniceras besaiei is generally subcircular or elliptical in shape, with a cross-section that can be slightly compressed. The spiral of the shell follows a continuous and regular curve.
The specimens can vary greatly in size, but the shell is usually of moderate size compared to other ammonites, with a diameter that can reach a few centimeters.
The mother-of-pearl of Cleoniceras besaie, if well preserved, is bright and iridescent, showing reflections that range from green to blue and violet. This inner layer is composed of aragonite, a form of calcium carbonate that gives the shell a special luster and the characteristic iridescence.
A very important group from a fossil perspective belonging to the Devonian-Cretaceous period. Completely extinct at the end of the Cretaceous, it is believed to derive from ancestors belonging to the Nautiloidea. Although part of the cephalopod mollusks group, ammonites are distinguished mainly by the shape of their shell, characterized by bilateral symmetry. The shell is divided into an unsegmented anterior region where the animal resided and a posterior region divided into chambers. The line of closure between the chambers is very indicative and facilitates species recognition. Additionally, its outline, initially quite simple and linear in early forms, gradually changed until the more recent ammonites, which are often very jagged and almost baroque. Sizes vary: they start from a few centimeters but can reach up to 10 centimeters. Since these are entirely extinct marine species, we can only hypothesize about their lifestyle. It is believed that forms with smooth shells externally were swimmers, often predators. Species with more ornate and costate shells were predominantly benthic.
Very interesting lot: two precious objects... for collectors or for simple lovers of unusual design and furniture items.
Pedestal not included.
Happy bidding.
Cleoniceras lucidata measurement: 135x135x30 mm
Natural cleoniceras measurement: 105×90×30 mm
Seller's Story
We deal with naturalistic objects in
Prevalence coming from the fascinating
marine world, but by enthusiasts and
Lovers of enchanting facets.
Of life, we also propose minerals and.
metaphysical stones, taxidermies, fossils, and
decorative objects
A continuous journey through time and...
Space for the search for testimonies.
Precious.
Passion is the fire that fuels.
Our choices: collaborations with the
Major importers from exotic countries.
but also travels to discover sought-after destinations
objects
Ongoing research of new developments and
Our increasingly refined aesthetic.
main objectives
Just observe like a collector.
He manages the objects in his display case.
As soon as he/she/they take(s) one in hand, the
His or her inspired gaze seems to pierce through.
The object is to lose oneself in its distances.
Here lies the magical side of the collector.
Walter Benjamin
Translated by Google TranslateDetails
Number of items
2
Specimen
Two Ammonites
Scientific name
Aioloceras (Cleoniceras) sp.
Country of Origin
Madagascar
Geological Period
Cretaceous, Lower (145 - 100.5 million years)
Condition
Manipulated
Treatment
Polished
Weight
1 kg
Height
135 mm
Width
135 mm
Depth
30 mm
