Re: Post k/t dinosaur teeth

["Jim Kirkland Ph.D" <dis@gj.net>]

dunn1@IDT.NET wrote:
> 
> Which species of dinosaur(s) left its (their) teeth above the k/t
> boundary?  Has this been identified?  Do most paleontologists believe
> that these are were pushed up into the more recent formations?
>A great many particularly since the famed Bug Creek Anthills is now 
considered largely a reworked fauna in basal Paleocene strata.

        We (Eaton, Kirkland, and Doi) reported a few years back in 
Palios about reworked Cretaceous Vertebrate remains. Of the several 
examples we gave, the most interesting is the repeated occurrences 
(dozens of localities spanning several Land Mammal Ages) in the Lower 
Eocene south of Dinosaur National Monument, of many Cretaceous 
vertebrate teeth. These include 4 dinosaur taxa (2 theropod, 
ceratopsian, and hadrosaur) and numerous (12 taxa) sharks. These strata 
(Wasatch Formation) were deposited at least 10 my after the extinction 
of the dinosaurs and as we argue that, in addition finding it hard to 
believe we had missed a fauna of surviving dinosaurs, It is hard to 
beive we have missed all the sharks flopping around on the floodplain.
        The preservation of the teeth was excellent and apparently to 
the naked eye the same as that of the cooccuring Eocene mammal faunas. 
We believe these materials were sorced by Cret. sediments eroding off 
the Uinta uplift to the north.

Jim K.

Jim K.