Kem Kem fossil bone - phalange?

[Being Human]

This is a Kem Kem 'possible Spinosaurus' unidentified bone. Fairly poor condition with some liberal filler but some of the original shape is visible.

 

Looking at known examples of Spinosaurus foot bones this seems like a poor match - it's just too broad and short, at least as far as I can see. However, it does resemble the shape of some other theropod phalanges I've seen. Another possibility, just based on overall shape, seems to be a crocodilian carpal bone.

 

Can anyone shed any light on this?

[Being Human]

Forgot to add dimensions: 60mm long, 45mm wide at top, 26x10mm at narrowest point.

[Flx]

I have some similar pieces and I was not able to identify them.
I don't think its a phalanx due to the flat cross section. My best guess is "turtle limb bone" so far.