...continued

Velociraptor
and Compsognathus of "Jurassic Park" fame
belong to a group of small predatory
dinosaurs often referred to as "raptors."
For dinosaur aficionados the
list of precious raptors is long and
includes the sickle-toed Deinonychus
and the fleet-footed Troodon
from Montana. Recently
named raptors include the feathered
Sinornithosaurus and Microraptor
from China.
To date, raptors share one common
characteristic--they all come from
northern continents. The
fossil evidence for raptor-sized dinosaurs
is terribly lopsided. There
is almost no information available
from southern landmasses such as Africa.
As we continued to work to figure
out how much of the raptor was preserved,
we came across the tail of another,
larger, predatory dinosaur less than
a foot away. The bones of the smaller
"raptor" were so delicate that we
dared not expose them further in the
field for fear of damaging them.
We dug around our new little
southern "raptor," and took all the
bones in a single jacket.
Doubtless a new species, the
small predator will remain an exciting
enigma until the jacket is opened
and cleaned in the lab back at the
University of Chicago.
With new crocs, and two new predators
jacketed we are just halfway into
the field season--and the outlines
of the story of what life was like
on Africa at the end of the dinosaur
era are starting to take shape..
Paul C. Sereno |