From the pamphlet: Squeezed, bent and broken after they formed, these Guerilla Bay rocks consist of a mix of fragments called tectonic melange. Contained in these chert rocks are tooth-like microfossils (less than mm) from the gut of extinct eel-like animals but a microscope is required to see these minute fossils.
Note about chert: "Chert is a hard, fine-grained sedimentary rock composed mostly of crystalline quartz. Chert is characteristically of biological origin, but may also occur inorganically chemically (stone axehead) or a diagenetic replacement (petrified wood)".  Over this weekend, I don't immediately recognise anything that is obviously chert.