Shark teeth and other finds from SC coast (U.S.)

[randoc79]

First time fossil hunting and I brought back the teeth, bone and miscellaneous finds dug up from a spot along the South Carolina coast. 
I would love some help identifying the bigger ones, or anything that is noteworthy.

I'm especially eager to get the right ID on Group B. Here are my guesses, but I am very new to this...

Group B:

1-3, 7 and 8: Snaggletooth shark?

4: Megalodon (top left broken)

5: Sand tiger? 
6: No idea. The curve seems to be part of the tooth shape, not a result of chipping. I can post a close-up of it or the other side.

Group A: Baby Shark Teeth

2, 7: Baby sand tiger?

6: Not sure why this one has a copper color to it (my friend I went with found this interesting)

10, 15: Extinct baby great white?

12, 13: Tiger shark?

16: Similar shape to B6, but smaller

 

Group C: Miscellaneous

1&2: Possibly fossilized coconut shell?

3: I'm not sure if this shell is a fossil or just old

4: Semi-transparent with black grains inside - hard to photograph. Maybe nothing interesting.

5. Probably nothing. Tooth shaped but maybe just bone.

 

Group D: Fossilized bone fragments. Anything distinguishable?

 

Thanks so much for taking a look! 

 

[Meganeura]

in Group B: 2, 3, 7 and 8 are absolutely Snaggletooth/Hemipristis. 1 looks more like  Carcharihinus sp. to me. 5 does look like a sand tiger, 4 is definitely a Meg. 6 definitely needs more photos.

For group A: 1-3, and 6-8 are Negaprion Sp. - Lemon sharks. 10 does look like a C. Hastalis - the extinct white shark/Mako. 5 and 13 look to be tiger - Galeocerdo Sp. 1 in Group B could also be tiger. 4, 9, 11, 12, and 14 look to be more Carcharihinus.

For Group D: 1 looks to be a sting ray barb fossil.

Edited June 3, 2022 by Meganeura