I got a fossil plate at around 5.5" long with trilobites from online. The seller states that:
Location: La Prairie, Quebec, Canada
Age: Upper Ordovician
Formation: Nicolet Formation
The plate also has other fossils that I could not identify. They look like fan. Are they just scallops? I also find something in the last picture. I don't know they used to be plant or animal. Thank you very much for your help.