死亡群落学 - 动物化石 - Cleoniceras sp. & others - 21 cm - 18 cm





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马达加斯加产,下白垩纪早期 Cleoniceras sp. 等的自然Thanatocenosis标本,铁氧化铁化的猛齿者群,带有黄铁矿痕迹,尺寸高21 cm,宽18 cm,深14.5 cm,重量3.765 kg,真实性 Original/官方。
卖家的描述
Exceptional Hematite-Fossilized Ammonite Assemblage (Thanatocenosis) – Cretaceous
This extraordinary Cretaceous ammonite assemblage represents a rare natural thanatocenosis, preserving multiple ammonites within their original matrix. The composition is dynamic and organic, with overlapping shells of varying sizes naturally accumulated in an ancient marine environment.
The ammonites are fossilized in hematite, giving them their characteristic deep black coloration with a metallic sheen. This mineralization enhances both the visual impact and the state of preservation. On the largest specimen, a very well-visible trace of pyrite is present, adding a striking golden contrast against the dark hematitic surface.
Several specimens clearly show growth lines and well-defined sutures, testifying to the quality of preservation and offering valuable paleontological detail. The combination of polished surfaces and areas retaining natural matrix creates a compelling contrast between refinement and authenticity.
The preparation has been carefully executed to reveal the forms without compromising the integrity of the piece. The balance between exposed fossil surfaces and surrounding matrix preserves the geological context while emphasizing the sculptural presence of the assemblage.
The result is a specimen of strong visual and scientific appeal — equally suitable for a serious fossil collection, museum-level display, or as a dramatic natural sculpture in a refined interior setting.
A remarkable and powerful composition combining rarity, aesthetic impact, and paleontological significance.
卖家故事
Exceptional Hematite-Fossilized Ammonite Assemblage (Thanatocenosis) – Cretaceous
This extraordinary Cretaceous ammonite assemblage represents a rare natural thanatocenosis, preserving multiple ammonites within their original matrix. The composition is dynamic and organic, with overlapping shells of varying sizes naturally accumulated in an ancient marine environment.
The ammonites are fossilized in hematite, giving them their characteristic deep black coloration with a metallic sheen. This mineralization enhances both the visual impact and the state of preservation. On the largest specimen, a very well-visible trace of pyrite is present, adding a striking golden contrast against the dark hematitic surface.
Several specimens clearly show growth lines and well-defined sutures, testifying to the quality of preservation and offering valuable paleontological detail. The combination of polished surfaces and areas retaining natural matrix creates a compelling contrast between refinement and authenticity.
The preparation has been carefully executed to reveal the forms without compromising the integrity of the piece. The balance between exposed fossil surfaces and surrounding matrix preserves the geological context while emphasizing the sculptural presence of the assemblage.
The result is a specimen of strong visual and scientific appeal — equally suitable for a serious fossil collection, museum-level display, or as a dramatic natural sculpture in a refined interior setting.
A remarkable and powerful composition combining rarity, aesthetic impact, and paleontological significance.

