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Re: Only One Triceratops Species??
I looked that up myself.
Ruth Mason ranched (she died in 1990) near Faith, South Dakota, a prairie
community 100 miles northeast of the Black Hills. When she was seven years
old, she discovered a bed of ancient bones weathering out of a bluff a few
miles from her folks' house. For eighty years she attempted vainly to
interest researchers in her find. In the spring of '79, Pete and Neal Larson
met Ruth and were taken to the bones. Near the channel of the Moreau River,
in a bluff cut by the river, was the graveyard of what appeared to be
hundreds of dinosaurs. In a bed about eighteen inches thick, bones were
found almost everywhere the Larsons probed with a digging knife.
The Larsons are still working this find, which they called the Ruth Mason
Quarry. The find contained the remains of at least two thousand
Edmontosaurus annectens, all disarticulated. There is only speculation as to
the reason so many bones were in one place. The river system could have
transported the bones a few at a time to a sandy coast at the edge of a
receding Cretaceous sea. Or a great storm could have trapped and drowned a
herd on a spit of land. Various carnivores teeth, including that of T. rex,
were also found at the site, which could simply mean that these beasts were
scavenging the remains.
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