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Re: *Longisquama* and Fossil "Ghost" Lineages -- Rehashing an Old Debate



In a message dated 6/26/00 5:59:02 PM Pacific Daylight Time, ELurio@aol.com 
writes:

> The last common ancestor of grapholites and Cephalodiscus was the Ordovican 
>  at least.

Unless _Cephalodiscus_ could be shown to nest within the graptolites, that 
is.  But this does not appear to be the case, from what's been said on the 
list...

Nick P.