21097 - Top Rare Anomalocaridid Aegirocassis benmoulai filter feeding appendage Ordovician Aidachar Unbroken specimen

Unbroken specimen

the Russian Federation (1)

Rooted incisor specimen

Finest grade natural association

Beautiful collection of 4 Prognathodon anceps teeth

21097 - Top Rare Anomalocaridid Aegirocassis benmoulai filter feeding appendage Ordovician Aidachar Unbroken specimenTop 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