Saw a few of these abalone locked onto the rock in some crevices at low tide.
Not 100% on this, there are a couple similar looking Tegulas in SoCal. I didn't take the most diagnostic photos either...
Archaeogastropoda (also known as Aspidobranchia) is a taxonomic order of sea snails used in older classifications of gastropods. Archeogastropoda are marine prosobranch gastropod mollusks, mainly herbivores, typically having two gills and a double-chambered heart, with the eggs and sperm discharged directly into the water. They were traditionally regarded as a relatively primitive group.
