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PELYCOSAURIA
On the subject of clade and grade names, Chris Brochu said..
> "Pelycosaur" is a valid adjective, describing a basal synapsid
> lacking certain derived character states, but the noun "Pelycosauria"
> is no longer viable.
Actually, the name Pelycosauria is used as monophyletic clade in a
few recent works on synapsid phylogeny.
My hands smell of dead cat.
DARREN NAISH
darren.naish@port.ac.uk