Manuel Quiring

化石拍卖

这是一个大型、经过切割打磨的手工盘，由树脂、砂子和来自马哈贾加省的 Phylloceras 菊石组成。菊石被晶化在一层树脂之中，之上是一层砂床。美丽的构图。已被玛瑙替代，内部许多腔室内壁覆有方解石晶体。

这是一个已灭绝的头足类软体动物，属于菊石。它生活在侏罗纪晚期（约1.72亿至1.49亿年前），化石遗骸在所有大洲都能找到。

它们是海生动物，外壳主要由碳酸钙组成，呈阿拉贡石形态，部分为一种蛋白质性质的有机物（conchiolin）。外壳内部通过隔膜分成若干腔室，软体动物只占据最后一个腔室（生活腔）。其他腔室，即构成分腔（壳的分腔部分），被用作“空气腔”——类似于现今的鹦鹉螺，充满气体和腔液以控制生物的浮力。腔室液体的压力由一种薄而富血管、部分矿化的管状有机结构（虹吸管）来控制，它穿过所有隔膜，并通过渗透作用使动物的血液和软组织与腔室之间的液体交换。

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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.
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斑彩螺 - 动物化石 - Aioloceras (Cleoniceras) sp. - 11 cm  (没有保留价)

白垩纪， 下 （1.005 - 1.45亿年） - 马达加斯加

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Aioloceras (Cleoniceras) sp. 菊石标本，来自马达加斯加，早白垩纪（约145–100.5百万年前），抛光处理且组装，原始/官方，高度11 cm

斑彩螺 - 动物化石 - Aioloceras (Cleoniceras) sp. - 11 cm (没有保留价)

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Aioloceras (Cleoniceras) sp. 菊石标本，来自马达加斯加，早白垩纪（约145–100.5百万年前），抛光处理且组装，原始/官方，高度11 cm

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