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Good day to all ! I was recently offered (by a Moroccan dealer) 2 heteromorphic ammonites at reasonable prices, and would appreciate any input. Both are around 40cm ( 16 in) in total length, and the details on their proversum, flexus and retroversum seem rather convincing. (see the 1st and 2nd photo) What appeared suspicious are the following: - the 2 ammonites are of non typical colorations (this is due to protective coatings per the vendor) - their remaining matrix seemed too smooth and flat, resembling that of a confirmed plaster casting made in a French museum (see the 3rd photo) It is claimed by the vendor that these Ancyloceras were found in broken pieces and glued back, but were mostly 'originals'. Only their spirals were restored/reconstructed. Similar Ancyloceras Sps from the lower Aptian plurimetric clayey formation of east Paris basin in France are known to be extremely rare (Bersac, 2020), but I have no idea how common these are in similar formations of Morocco. Again, thanks for any input ! reference: https://www.sciencedirect.com/science/article/pii/S0753396919300497 Bersac, 2020
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- casts?
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