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Thanks for advice in previous post. Here are some of the other items we could not identify. Any help is appreciated.

Found this yesterday at Brownie Beach, Maryland. I know it's from a Cow Shark, but I'm not sure about the specific kind. Any ideas?

I visited Brownie Beach yesterday morning at sunrise, and was able to expand my findings from my first trip last May. There are several good resources online about the fossils typically found in the Calvert formation at this location, so I've done my best to try to identify my fossils, however there are a few I haven't been able to ID. Feel free to correct any misidentifications or add any IDs that you may know. 1)2)3)4)5) 1) Epiphysis - Juvenile porpoise vertebra 2) Kentriodon sp. - Porpoise thoracic vertebra 3) Assorted marine mammal 4) Eurhinodelphis bossi - Long-snouted dolphin tooth 5) Physogaleus contortus - Tiger shark 6)7)8)9)10) 6) Hemipristis serra - Snaggletooth shark 7) Carcharias sp. - Sand tiger shark 8) Sphyrna zygaena - Hammerhead shark 9) Carcharias sp. - Sand tiger shark or Isurus desori - Shortfin mako shark ? 10) Megalodon fragment ? 11)12)13)14)15) 11) Completely hollow Isurus desori - Shortfin mako shark ? 12) Ray tail spine? 13) Astrhelia palmata - Coral 14) Melosia staminea - Astarte clam with bore hole 15) Dentalium attenuatum - Tusk shell 16)17)18)19)20) 16) Chesapecten nefrens - Scallop 17) Turritella sp. - Gastropod ? 18) Turritella sp. - Gastropod (slightly different)? 19) Balanus sp. - Barnacle 20) Glycymeris parilis - Bittersweet clam 21)22)23)24) 21) Pycnodonte percrassa - Bivalve mollusk ? 22) Unknown bivalve mollusk ? 23) Unknown gastropod in matrix ? 24) Unknown gastropod in matrix ? Also, I found a bone in the water, which seems pretty dense, but I'm not sure whether it is just a modern bone or a land mammal fossil. Any ideas?

Hi I'm fairly new to fossil hunting and would like to go to the Calvert cliffs soon, but I'm not sure what site to go to there. Also I would like to mostly find shark teeth. I live about 6 hours away and am staying for about a day and a half. I was leaning towards either going to brownies beach, the motoaka beach, or the flag ponds nature park. I would love to know what sight would have the most or best fossils and shark teeth. Also any tips for fossil hunting tips there would be great.And also I was wondering if there's anything where you can get on a boat which a group of people and go to less hunted spots. Thank you