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Goniatitic Sutured Goniatite Ammonoid On Bronze 340mm


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Natural Goniatite displaying calcification within the chambers which can be seen now the shell has been removed. The limestone Goniatite has been prepared using an acid preparation. Read more about this unique fossil below...

Genus: Gonioclymenia speciosa, Goniatitic Ammonoid, (Clymenia sp. described by Münster 1839)
Subclass: Ammonoidea
Family: Clymeniidae (Edwards 1849)
Age: Palaeozoic era, Devonian, Famennian age, 372 to 359 million years ago.
Origin: Gonioclymenia limestones, Tafilalt Platform (Anti-Atlas, SE Morocco), North Africa.

Goniatite ammonoid on stand measurements.
Height: 37.0 cm
Width: 29.0 cm

Goniatite ammonoid measurements.
Height: 25.0 cm
Width: 29.0 cm
Depth: 5.5 cm

Goniatite ammonoid Base.
Height: 3.0 cm
Width: 17.5 cm
Depth: 9.0 cm

Goniatite weight: 3,549 kg

Total weight on stand: 4,092 kg

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A natural Goniatite ammonoid which has been treated with an acid preparation giving the fossil a more organic appearance. The chambers clearly distinguished by calcification, Calcite minerals have grown within the shell, this occurs during the fossilisation processes. The Goniatitic zig-zag chamber alignment is also a very interesting feature of this specimen. The Goniatite having warm brown tonal colours to white calcite inclusions of the quartz mineral family. The fossil mounted in this accent presents a pleasing natural sculptural form as well as a scientifically interesting fossil ammonoid specimen.

The natural Goniatites displaying calcification within the chambers which can be seen now the shell has been removed. The Goniatite is a delightful and unique fossil specimen. Sediments of time have created muted colourisation, caused by the absorption of minerals in the fossil limestone bed, this a type of fossil metamorphism, the limestone was once a silty seabed around 380 million years ago, the habitat of the cephalopods, a type of marine mollusc similar in attributes to the modern-day Nautilus.

Goniatites are ammonoids, ammonoids are an extinct type of cephalopod. The cephalopod group include modern day octopi, squids and cuttlefish. Cephalopod named from the Greek and so aptly named, loosely translated into English as head-foot. The ammonoids range lasted from the Cambrian period around 500 million years ago up to the Cretaceous period around 65 million years ago. An immense period of time which led to much dimorphism between different genera.