Here's another site you might want to try. If you've ever seen Ralph's MAPS collection this is one of the places where you can find some really big Ammonites. If you look in the boulders at the old dam by Tinton Ave. you can find some , but you are going to have to hammer them out. If you go upstream and look in the riffles and gravel bars sometimes you can find them just laying around. There are gravel bars and riffles all the way up to Hockhockson Rd., but getting to them can be difficult. I'll post more sites as I remember(I've had some strokes so my memory can be difficult) so all can enjoy. Good luck looking and if you like to fish the stream is trout stocked. I forgot to mention this site is in Tinton Falls NJ.