South Carolina shark teeth in need of an ID

[old bones]

I am in need of some help with ID’s on these three shark teeth from the beaches of South Carolina.

 

I think that 1 and 3 might be a species of Isurus, but I have trouble with shark teeth…

 

Number 2 is unlike any I have ever found at the beach with that little cusplet.

 

All help is appreciated.

 

 

[Fin Lover]

I would say the first one is likely angustidens, second one hastalis, and either another hastalis or an Isurus for the third...I have trouble telling those two apart in pictures.  I can't tell for sure if it has a worn enamel ledge on the third one (labial side), but I think I see one.  If so, I. retroflexus.

 

Edit: Sorry, I just realized the pictures were out of order.  I went based on position in the post, not the number.

Edited June 16 by Fin Lover

[old bones]

21 minutes ago, Fin Lover said:

I would say the first one is likely angustidens, second one hastalis, and either another hastalis or an Isurus for the third...I have trouble telling those two apart in pictures.  I can't tell for sure if it has a worn enamel ledge on the third one (labial side), but I think I see one.  If so, I. retroflexus.

 

Edit: Sorry, I just realized the pictures were out of order.  I went based on position in the post, not the number.

Thanks so much @Fin Lover. I didn't mean for the pictures to be out of order, but no biggie, I understand your answer. 

Even though it is beat up, I am pleased with the angustidens as I don't think that I have ever found one before.

As for the other two, I realize that they are worn enough to make positive ID difficult.  I do believe that (in hand), there is that enamel ledge just barely there to indicate I. retroflexus.

[Fin Lover]

Retroflexus was my first thought, but I have answered incorrectly on a couple of hastalis that I IDed as Isurus, so I understand that's my weakness.    Very nice hastalis, though.  They are like the GWs here in that they often don't have complete roots.  I think that's why I have an issue IDing hastalis...I rarely find them with any root.  

 

The cusp on the angustidens is small but I think it would have been much more obvious before the serrations wore off.  You can find megs here but chubs are rare.  Angustidens are most likely and can have a very wide range on the cusp size and shape.

[hemipristis]

Concur with #3 as retroflexus

[old bones]

3 hours ago, Fin Lover said:

Retroflexus was my first thought, but I have answered incorrectly on a couple of hastalis that I IDed as Isurus, so I understand that's my weakness.    Very nice hastalis, though.  They are like the GWs here in that they often don't have complete roots.  I think that's why I have an issue IDing hastalis...I rarely find them with any root.  

 

The cusp on the angustidens is small but I think it would have been much more obvious before the serrations wore off.  You can find megs here but chubs are rare.  Angustidens are most likely and can have a very wide range on the cusp size and shape.

Thank you very much @Fin Lover for the help and concise explanation.  

23 minutes ago, hemipristis said:

Concur with #3 as retroflexus

Thank you @hemipristis for your confirmation!