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On the topic of the San Juan "Paleocene dinosaurs," I had occasion to ask
Dr. Thomas Lehman, who knows a bit of San Juan stratigraphy, during my five year
internment at Texas Tech. He indicated that this specimen has been known for a
substantial period of time (it hasn't been news in years), and that the interval
from which the specimen was recovered consists of several sandstone units
"sandwiched" together into a thick section of sandstone. The precise correlation
of particular sandstone beds to the laterally contiguous Maastrichtian and
Paleocene deposits is not well understood. My recollection is that part of this
sandstone sequence is correlative with Maastrichtian rocks. The upshot was that
the specimen is stratigraphically indeterminate. Sorry folks.
Wagner
P.S. Dan, missed you in Bozeman, man. You must go to Norman, Oklahoma...
there you can meet Lehman, the Paleontologist who instructed me... ;)
Jonathan R. Wagner
9617 Great Hills Trail #1414 Austin, TX 78759 |