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In a long long list, Mickey M wrote..

> - all
> sacrals pleurocoelous (Headden, pers. comm.) True in Neimongosaurus,
> Chirostenotes and oviraptorids.  Alxasaurus only has a possible
> pleurocoel in sacral 1, the others being non-pleurocoelous. 
> Caudipteryx lacks them (Zhang et al., 2001).  Perhaps also true in
> Eotyrannus. 

Only one sacral is definitely known at present for _Eotyrannus_, the 
most caudal one. It is a definite sacral and it has definite pleurocoels. 

Darren Naish
School of Earth & Environmental Sciences
University of Portsmouth
Burnaby Building
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