SPINOSAUR TEETH

[darren.naish@port.ac.uk]

David wrote...

>   Of interest are the relationships between Baryonyx and Suchomimus: 
>   taxa having [...] non-serrated spike-like dentition.
> I forgot: The above do have serrations, although very small ones. The
> total absence of serrations is diagnostic for Spinosaurinae
> (Spinosaurus, Irritator).

Some _Baryonyx_ teeth do lack serrations. They can still be identified 
as _Baryonyx_ (or at least cf. _Baryonyx_) because of their enamel 
microtexture, cross-sectional shape, presence of faceting etc.

DARREN NAISH 
PALAEOBIOLOGY RESEARCH GROUP
School of Earth & Environmental Sciences
UNIVERSITY OF PORTSMOUTH
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