Ammonite - 動物化石 - Argonauticeras besairiei - 21 cm

Ammonite - 動物化石 - Argonauticeras besairiei - 21 cm #2.1

Ammonite - 動物化石 - Argonauticeras besairiei - 21 cm #3.2

Ammonite - 動物化石 - Argonauticeras besairiei - 21 cm #4.3

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Argonauticeras besairiei ammonite from the Mahajanga Basin in Madagascar, dating to the Albian stage of the Lower Cretaceous, in natural condition and polished to reveal its suture lines and pinkish shell, with a height of 21 cm, a diameter of 21 cm and breadth of 9 cm, weighing 3.7 kg, and with minor cracks filled.

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Description from the seller

種名: Argonauticeras besairiei
時代: 白亜紀・アルビアン期
産地: マハジャンガ盆地、マダガスカル

測定: 直径21 cm – 幅9 cm
重量: 3.7 kg

美しい綴孔線と淡いピンクがかった殻を備える素晴らしい磨 crust/ polished ammonite。最後に保存された隔壁は、その特徴的な形を現れるように整えられています。
このサイズで珍しく稀少な種です。研磨前に小さな亀裂が埋められていました。

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