Re: Pterosaurs and ABSRD (sensu Williams)

["Tim Williams" <twilliams_alpha@hotmail.com>]

> > They are sister taxa, only there are a few taxa (e.g., some 
> prolacertiforms,
> > all dinosaurs) in each lineage in addition to the pterosaurs and birds.
>
> By the same caveat, any two clades are sister taxa....


Yes, like me and _Escherichia coli_.

By "sister taxa" I mean two groups whose closest relatives are each other.


Tim

------------------------------------------------------------

Timothy J. Williams

USDA/ARS Researcher
Agronomy Hall
Iowa State University
Ames IA 50014

Phone: 515 294 9233
Fax:   515 294 3163

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