Potomac River, Maryland - 1st Shark Tooth Hunt!

[Because.Aliens]

Hello!

 

I am brand new to fossil hunting. We went out to Purse State Park along the Potomac River in Maryland and found the attached.

 

Any help in identifying any of these would be much appreciated! This is my first time at this!

 

Thanks so much in advance! 

 

Edited March 18, 2018 by Because.Aliens
Corrected location

[ynot]

Welcome to TFF!

Most of the shark teeth look like sand tigers. Need closer pictures of individual teeth to be sure though.

 

In the second picture there are 3 myobatus (ray) teeth (Middle left).

Below those is a snail steinkern (internal cast of shell).

The 2 larger rocks have shell impressions in them, but need better close up pictures to identify (at least for Me.).

Not sure what the other 2 pieces are.

[Because.Aliens]

Thanks so much, @ynot!

 

Attached are a couple close-ups of a few teeth (front and back), as well as the unknowns in case anyone has any ideas!

 

Appreciate everyone's time!

 

Edited March 18, 2018 by Because.Aliens
Added photo

[HoppeHunting]

Pretty nice finds! Welcome to the world of fossil hunting. I agree with @ynot. Most of the teeth you find at Purse will be sand tigers. Most of yours appear to be Carcharias hopei. Some of the stubbier ones with bigger triangular cusps may be mackerel shark teeth. And just for future reference, Purse State Park is actually located in Nanjemoy, Maryland, not Northern VA. Hoppe hunting!

[Because.Aliens]

Thank you, @HoppeHunting! I will make the correction in location on my post! Appreciate the feedback!

[Rockwood]

3 hours ago, HoppeHunting said:

Purse State Park is actually located in Nanjemoy, Maryland, not Northern VA. Hoppe hunting!

That bridge is hard to miss.

The last two are perhaps a crab claw, although concretion isn't out of the question, and sponge borings in a piece of  (bivalve?) shell.