21169 - Top Rare Anomalocaridid Aegirocassis benmoulai filter feeding appendage Ordovician Coloborhynchus Errachidia province

Errachidia province

Impressive juvenile Onchopristis tooth

This is one of the sharks with sharpest and most serrated edges of all the assemblage in the Paleogene phosphate quarries of the Oulad Abdoun Basin (Morocco)

United States (Nevada)

Mauritania (1)

21169 - Top Rare Anomalocaridid Aegirocassis benmoulai filter feeding appendage Ordovician Coloborhynchus Errachidia provinceTop 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