Extreme posterior shark tooth -- Otodus obliquus?

[bthemoose]

In sorting through some of my previously unidentified Maryland, USA, shark teeth from the Aquia Formation (Paleocene), I found the small tooth below, which looks like it may be an extreme posterior tooth from an Otodus obliquus shark. It's missing a cusplet, but the shape of the remaining cusplet, cusp, and root all remind me of Otodus or possibly Cretalamna sp., which is also present in the formation. If this is an Otodus, it's definitely the smallest one I've found. @MarcoSr and others, what do you think?

 

Here are several views:

 

 

And here it is next to my largest Otodus (measuring 48.6 mm on the slant) from the same location.

 

[MarcoSr]

Your specimen is either an Otodus or Cretalamna extreme posterior tooth as you state in your post.  The size isn't determinant, as size wise it could be either.  Some features are worn like the exact crown and cusplet shape.  However, based upon the root shape, no deep U, I would say it is Otodus.

 

Marco Sr.

[bthemoose]

2 hours ago, MarcoSr said:

Your specimen is either an Otodus or Cretalamna extreme posterior tooth as you state in your post.  The size isn't determinant, as size wise it could be either.  Some features are worn like the exact crown and cusplet shape.  However, based upon the root shape, no deep U, I would say it is Otodus.

 

Marco Sr.

Thank you—very helpful and informative as always!

[shark57]

I agree with Marco, definitely looks like an Otodus to me.