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07173 - Superb 3.80 Inch OPHIURA SP Brittlestar Upper Ordovician Ktaoua Fm Brittlestars Understanding heteromorph ammonites

SKU: 53618815960
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Description

Understanding heteromorph ammonites

-The North African Mosasaur Globidens phosphaticus from the Maastrichtian of Angola

Its length has been estimated between 9 and 12 m (30-40 ft)

in Morocco

abruptly posteriorly recurved

07173 - Superb 3.80 Inch OPHIURA SP Brittlestar Upper Ordovician Ktaoua Fm Brittlestars Understanding heteromorph ammonitesBeautiful preserved and well prepared specimen. This type of brittlestar is quite representative of the Ordovician of the South of Morocco. Its orange colors come from the limonite (iron oxide) that is the product of the oxidation of the original pyrite that mineralized these fossils.

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