Travel Reference
In-Depth Information
8
The
Ancestry
of
the Nautilus
L
ong ago, when animals had but a single common name, natural philoso-
phers speculated about the separateness of animals and plants. Surely the in-
dividuality of what we now recognize as species (as well as the richness and
diversity of these entities) was there for any to see. But just as surely there
were
connections
between certain organisms. Dogs are not wolves, and lions
are not lynx, yet who would deny that some connection exists? But how
much, and why? If life is a great tree, how ate its btanches differentiated, and
how can those ptuned by extinction be detected?
