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Re: Zootaxa iguanodont paper
species do not last long. It is now known that the species of
centrosaurs, chasmosaurs, corythosaurs, lambeosaurines were limited
to distinct levels of the Dinosaur Park formation. Before referring
specimens to a known species it must be first demonstrated they are
from the same level of a formation as the type.
All this depends on which species concept you pick. For instance, if
your concept is purely morphological, a species can last forever if its
body shape happens not to change "enough".
Unfortunately, most people don't even consciously pick only one species
concept, let alone actually write down which one they've chosen. And the
ICZN pretends the entire issue doesn't exist... indeed, it's founded
(Strickland et al. 1842, 1843) on the view that this vagueness is a
feature rather than a bug.