Manuel Quiring

化石拍賣

这是一块大型、经过切割打磨的手工树脂、砂土和来自马哈扬加省的Phylloceras阿普蒙斯（菊石科）化石板。菊石在树脂层中晶化，位于一层砂床之上。构图美观。它已被玛瑙替换，许多内部腔室内壁镶有方解石晶体。
这是一个已灭绝的头足动物，属于菊石。它生活在上侏罗世（大约1.72亿至1.49亿年前），化石遗存遍布各大洲。
这些是海生动物，特征是外壳主要由碳酸钙的阿拉贡石相组成，部分为一种有机蛋白质成分（壳质蛋白Conchiolin）。壳内部由隔板分成若干腔室，动物只占据最后一个腔室（活腔）。其他腔室，即充作

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. It has been agate replaced, and many of the internal chambers are lined with calcite crystals. 
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.

菊石亞綱 - 動物化石 - Aioloceras (Cleoniceras) sp. - 11 cm  (沒有保留價)

白堊紀，下 (14500 - 10050 萬年) - 馬達加斯加

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菊石亞綱 - 動物化石 - Aioloceras (Cleoniceras) sp. - 11 cm (沒有保留價)

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