21167 - Top Rare Anomalocaridid Aegirocassis benmoulai filter feeding appendage Ordovician Mammites nodosoides Ypresian and “Euclastes group” elements

Ypresian and “Euclastes group” elements

abundant in the Devonian of North Africa

Huge specimen

This specimen has a fresh cut to see its internal texture

Nice right mandibular fragment

21167 - Top Rare Anomalocaridid Aegirocassis benmoulai filter feeding appendage Ordovician Mammites nodosoides Ypresian and “Euclastes group” elementsTop rare filter feeding appendage of the anomalocaridid Aegirocassis benmoulai Aegirocassis is an extinct genus of anomalocarid arthropod belonging to the family Hurdiidae that lived 480 million years ago during the early Ordovician. It is known by a single species, Aegirocassis benmoulai. A fossil of A. benmoulai from the Fezouata biota, Morocco was discovered by and named after Mohamed Ben Moula, a fossil collector who recognized its rare