From the ArcaMax Publishing, Science & Technology Newsletter:
http://www.arcamax.com/news/technology/s-537371-283717
SANTA FE, N.M. (UPI) -- A U.S. scientist says he's found evidence
dinosaurs may have survived for 500,000 years in New Mexico and
Colorado after the Cretaceous extinctions.
Jim Fassett, an emeritus scientist with the U.S. Geological Survey in
Santa Fe, N.M., said he based his conclusions on detailed chemical
investigations of the dinosaur bones, and evidence for the age of the
rocks in which they were found in the Ojo Alamo Sandstone in the San
Juan Basin.
"The great difficulty with this hypothesis -- that these are the
remains of dinosaurs that survived -- is ruling out the possibility
that the bones date from before the extinction," Fassett said. "After
being killed and deposited in sands and muds, it is possible for bones
to be exhumed by rivers and then incorporated into younger rocks." But
he said he has amassed a range of evidence that indicates the fossils
from the Ojo Alamo Sandstone were not exhumed and re-deposited and
that dinosaurs really did live after the end Cretaceous extinction
event.
The controversial research appears in the journal Palaeontologia
Electronica.