I just read up Autism is 530 million years old. https://scienceoveracuppa.com/2023/07/11/a-lot-of-autism-genes-evolved-during-the-cambrian-period/

Anomalocaris and Wiwaxia hybridised! It would be a Arthropodial Molluscoid! Having sclerites, compound eyes and radula!

>>512705546
Also Anomalocarises.