Unknown selachians from New Mexico's Coniacian Take 6

[readinghiker]

Day two of posts. I am posting four more fossils that I need help with. The first is a fragment. It looks like the tooth broke off right before the main cusp. There are two accessory cusps, the larger one looks like it has striations. This caused me to think of Cretodus semiplicatus. However, according to Welton, this shark only has one set of accessory cusps, never two. So any ideas?

[Troodon]

Have you looked at this paper, slightly older deposit.

 

Bourdon, J., K. Wright, S.G. Lucas, J.A. Spielmann, and R. Pence, 2011. Selachians from the Upper Cretaceous (Santonian) Hosta Tongue of the Point Lookout Sandstone, central New Mexico. New Mex. Mus. Nat. His. and Sc., Bulletin 52; 54pp.