Sullivan Halipré

Fossiler Auktion (Samlerinteriør)

Dette er en stor, færdigbearbejdet håndlavet tallerken af resin, sand og Phylloceras-ammonitter fra Mahajanga-provinsen. Ammonitterne er krystaliseret inden for et lag resin og ovenpå en sandbund. En smuk komposition. En smuk komposition. Den er agat erstattet, og mange af de indre kamre er beklædt med kalkspatkrystaller. Udstillingsstativer medfølger.
Dette er et uddødt bløddyr, der tilhører ammonitterne. Det levede i den øvre del af Jura (172–149 millioner år siden), og dets fossile rester findes på alle kontinenter.
Disse er marinemariner, kendetegnet ved en ydre skal bestående hovedsageligt af calciumcarbonat i form af aragonit og delvist af en organisk substans af proteinnatur (conchiolin). Skallen var internt inddelt af septa i flere kamre, hvor bløddyret kun besatte det sidste (levende kammer). De andre, som udgjorde phragmoconen (skalens kammerdel), blev brugt som 

This is a large, cut and polished hand made plate made of resin, sand, and Phylloceras ammonites from Mahajanga Province. The ammonites are crystallized within a layer of resin and above a bed of sand. A beautiful composition. A beautiful composition. It has been agate replaced, and many of the internal chambers are lined with calcite crystals. Exhibitor stands included.
This is an extinct cephalopod mollusc belonging to the ammonites. It lived in the Upper Jurassic (172-149 million years ago), and its fossil remains are found on all continents.
These are marine animals, characterized by an external shell composed mainly of calcium carbonate, in the form of aragonite, and partly of an organic substance of a protein nature (conchiolin). The shell was internally divided by septa into several chambers, of which the mollusc occupied only the last (living chamber). The others, which made up the phragmocone (chambered part of the shell), were used as "air chambers" (similarly to the current Nautilus), filled with gas and chamber liquid to control the buoyancy of the organism. The pressure of the chamber fluids was controlled by a thin, richly vascularized, partly mineralized tubular organic structure (the siphon), which passed through all the septa and allowed the exchange of fluids from the blood and soft tissues of the animal to the chambers through a process of osmosis.

Ammonit - Forstenet dyr - Aioloceras (Cleoniceras) sp. - 12 cm  (Ingen mindstepris)

Kridttiden, Nedre (145 - 100,5 millioner år) - Madagaskar

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Aioloceras (Cleoniceras) sp., et 12 cm poleret ammonit-eksemplar fra Madagascar, Underkrydsetiden, tilstand Composed, autentificitet Original/officiel.

Ammonit - Forstenet dyr - Aioloceras (Cleoniceras) sp. - 12 cm (Ingen mindstepris)

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Aioloceras (Cleoniceras) sp., et 12 cm poleret ammonit-eksemplar fra Madagascar, Underkrydsetiden, tilstand Composed, autentificitet Original/officiel.

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