Modern species shark tooth display

I ran out of room in the other display, so I split the collection into extinct/extant species. I probably still need another riker! For scale, the big great white tooth is about 2 1/4" slant height.

In red are species that are endangered or critically endangered. The only teeth I regret having are the modern Makos, I had gotten them for comparative reasons (both are anterior, left is upper, right is lower). The fossil Mako is actually an I. desori (a big one!), but I included it since it's so morphologically similar to the extant species, and a few people would say they're synonymous. 

Species included (obviously will grow):

Alopias superscilliousus

Alopias cf. vulpinus

Sphyrna zygaena

Sphyrna mokarran

Carcharhinus obscurus

Carcharhinus plumbeus

Carcharhinus brachyurus

Carcharhinus falciformis

Carcharhinus leucas

Carcharodon carcharias

Carcharias taurus

Galeocerdo cuvier

Isurus oxyrhinchus

Lamna nasus

Negaprion brevirostris

Rhincodon cf. typus