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Re: TRICERATOPS AND PSITTACOSAURUS ARE NOT OVERSPLIT
At 9:28 AM -0500 3/7/01, Danvarner@aol.com wrote:
In a message dated 3/7/01 12:01:21 AM Pacific Standard Time,
<< T. horridus and T. prorsus do overlap somewhat temporally, but there are
periods where the only Triceratops kind in existence was the T. horridus
Is there now enough resolution to Hell Creek/Lance straitigraphy across
the large area in which it is exposed to make such a statement? I remember
the difficulties encountered by trying to divide the North Dakota Hell Creek
into members. This was a while back, however...
Depends on which state you are in. You can try to follow me up and
down the vertical column between the Meeteetse and the Lance in
northern Wyoming this summer if you care to.
I've got the contacts between the Teapot/Meeteetse and the
Meeteetse/Lance pretty well nailed. I measured the Meeteetse
allostratigraphically meter by meter last summer. This summer, I am
going in for a closer look.
I can't speak for definitively separating the Hell Creek/Lance yet
allostratigrpahically, and I'd have to make a strafing run in to
Montana to really do that well. I have time. There are a number of
people interested in that strata. I'm making a higher resolution
"longhorn." The progress report is in press (AAPG); the paper
discussing the initial research is in progress (along with at least 6