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Re: "Lazarus" Dinosaurs in the Paleocene!!?
First, it would probably be best to continue calling them "Lazarus"
dinosaurs, and not abbreviated as "Lazarosaurs". Otherwise it may generate
confusion with the non-dinosaurian genus Lazarussaurus (which were primitive
choristoderes or choristodere relatives).
As for Buckaroo's suggestion (below) that Paleocene dinosaur survivors
might be "the end of the impact hypothesis", I don't think it would even
begin to threaten he impact hypothesis unless we found that the great
majority of dinosaur species continued into the early Paleocene (along with
This does not appear to be the case at all. If there were dinosaur
survivors of KT, it was probably just a few species whose eggs managed to
hatch many months after the impact. Fassett himself suggests that all the
adult dinosaurs probably died in the devastation caused by the impact, and I
From the abstract, it appears that his talk tomorrow will deal with
how long he thinks the Lazarus dinosaur species survived (some almost a
million years in New Mexico?). Whether he will be discussing new evidence
that the hadrosaur femur was not reworked remains to be seen. We might have
to wait until early 2002 for that evidence.
He apparently has no grant money for this research, and works on it in
his spare time (which must make progress on this research slow and
difficult). I just hope he is right about "Lazarus" dinosaurs, and that
his new evidence will be pretty convincing (although it won't be like having
some articulated specimens).
By the way, does anyone know how close together the two "Paleocene"
theropod vertebrae were found? I assume they were not found articulated.
Date: Mon, 29 Oct 2001
If this hadrosaur femur turns out to be Paleocene, wouldn't it be the end
the impact hypothesis for all intents and purposes? What are the thoughts
the on-list professional paleontologists about this?
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