[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Fixing dinosaurian carnivour question
In a message dated 5/27/99 1:36:50 AM EST, dollan@cyberport.net writes:
<< Just so, it seems that I must have been in error. For a young person to
ask
what the smallest carnivorous dinosaur was, and then to have several
responses
dealing with birds (when I should think it would be obvious what he meant,
even if it was not expressly stated), as well as his use of imprecise
language
in delineating the subject, is ridiculous. >>
The philosophy of the situation is as follows: Cladistic analysis (or some
other kind of procedure) provides a suitable tree that relates the specimens
from which the relevant taxonomic features were extracted. How this tree is
subsequently chopped up into the manageable chunks known as taxa is entirely
up to the beholder. If the beholder likes, he or she may use only the clades
as taxa (in which case we would need the "non-avian" in front of "dinosaurs"
to eliminate birds from the discussion), but some find this system
unmanageable. Or he or she may use some other criteria for creating taxa
(e.g., ones like those Linnaeus employed, in which case we might dispense
with the awkward "non-avian" construction), but some are uneasy with the
subjectivity of such methods. Essentially with dinosaur taxonomy, you can
please some of the people all of the time, and you can please all of the
people some of the time, but you can't please all of the people all of the
time.