Synziphosurine
Early Ordovician (Arenigian)
Upper Fezouata Formation
Zagora, Draa Valley, Morocco

30mm with eyes on 66mm x 60mm slab. Includes part and counterpart.

A synziphosurine is a member of a suborder of arthropods, Synziphosurina, ancestral to the Order Xiphosura, which includes extinct and modern horseshoe crabs.

Not all dealers will give you part and counterpart, but here at The Natural Canvas, we like happy customers.

Speaking of happy customers, I just got back from the dentist. I don’t know what she gave me for the pain but that looks like Bela Lugosi laughing.

Video is an amazing 3D scan of a similar specimen from the Silurian