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I've been fascinated with Aegirocassis for a while now. The fact that a complex, giant filter feeder occured so many millions of years ago astonishes me. Its just such an alien animal. I've found little fragments of arthropod molts in the Drakes formation which belong to Isotelus. That got me wondering. What are the chances that instead of these all being from isotelus, that they're instead from another arthropod such as a eurypterid or ordovician radiodont. Another question I have is, does aegirocassis or a radiodont related to aegirocassis occur in any places other than morocco. The Drakes formation seems to have experienced a submarine landslide (don't quote me on this) and most to all of the fossils there are of creatures that were overtaken by said landslide. (Not entirely sure if this is true) But, what if there were such radiodonts like aegirocassis living in the Drakes formation but the only fossils we would find of them is molt fragments like the ones I've found that fell off of the animal and were buried in the sediment, instead of whole body fossils because they were able to escape this landslide. Though, I suppose the only way to confirm that such a radiodont lived in the Drakes would be to find an actual fossilized corpse of one. Really I just think this is a fun idea but it definitely would be cool if it is true.

Hello guys, so this specimen came up on the internet for sale. It is apparently a Aegirocassis benmoulai from the one and only Fezouata formation in the Draa Valley in Morocco. I am not trained with dealing with these types of specimens but what are the chances it is the real deal/thing??

Hi, Just wanted to ask if this listing is correct in regards to the identification. It is listed as the fossil head of the Anomalocaridid genus Aegirocassis. It is said to be from the Lower Fezouata Formation in Morocco dated about 480mya - so i believe the locality is correct for the species. Thanks in advance!