Here is a nice „welsh  flat fish”  that is actually a Trilobite from the family of  Asaphidae.
But in the early years of the palaeontology was this fossil described as a “unusual flat fish” from the small village Llandeilo in South Wales.  This sympatric misinterpretation makes  
reverend Dr. Edward Lhwyd some kind of famous in the world of palaeontology.

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