Coiled trachea (erratum)

["Norton, Patrick" <Patrick.Norton@state.me.us>]

My apologies to the list for leaving a word out in my e-amil on coiled   
trachea. The first sentence of the 3rd paragraph should have read:

>It struck me recently that another animal group that had (perhaps) the   
functional equivilent of tracheal loops were the crested *hadrosaurs*,   
although their loops were piled on top of their heads rather than   
contained within the chest.<