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Re: marginal differences
From: zone65 <email@example.com>
How do the two species of Triceratops differ? Again, it's not just a matter
of splitting hairs?
Forster (1996) characterized _Triceratops horridus_ as having a longer
rostrum, open postfrontal fontanelle, and relatively long supraorbital
horncores. She also characterized _T. prosus_ as having a short rostrum,
closed postfrontal fontanelle, and relatively short supraorbital horncores.
Lehman (1998) disagrees with Forster's 2 species conclusion, however, as he
finds the differing morphs tend to fall within a "gradational spectrum of
Undergraduate Student, Carleton University
Vertebrate Paleontology & Paleoecology
Paleoart website: http://www.geocities.com/paleoportfolio/
AIM: jslice mallon
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