6 cm Arnioceras semicostatum, Lower Jurassic, Monmouth beach, Lyme Regis
This 6 cm Arnioceras semicostatum was found on Monmouth beach, Lyme Regis. Prepared resting in it's nodule, a great display piece. It has a small amount of restoration to the matrix as the ammonite is showing on the reverse.
Lower Sinemurian, Black Ven Mudstone Member, Charmouth Mudstone formation. 199 MYA
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