In a message dated Fri, 11 Aug 2000 11:08:32 AM Eastern Daylight Time, Gareth Dyke <Gareth.Dyke@bristol.ac.uk> writes: <<One of the main problems with the ?monophyly of the alvarezsauridae is poor preservation of Alvarezsaurus - this material may prove problematic in future analyses - perhaps if someone were to find the skull ?>> I'd settle for an arm! Nick P.