I used to do a lot of fossil hunting along the whole western side of Aquidneck Island and the Cory Lane site was the only place I found with fossils still in situ in the cliffs. At low tide, park at the end or the road near the tracks and head right about 1/4 mile? It’s a 10 foot tall cliff of shale with many layers crumbling - some have fossils. The loose shale around this site also has them. I was finding almost exclusively Carboniferous ferns (about 300M yrs).