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RE: Greatest dangers in the Hell Creek environment

I don't see how this would be even measurable!!

The way we would assess this for a modern environment (like the Serengeti or 
the Okavango or whatever) would be to look at the
record of fatalities from a statistically significant population. We obviously 
don't have that!!

The correct answer, though, would be "effects of asteroid impact" (at least in 
the youngest Hell Creek) :-)

Thomas R. Holtz, Jr.
Email: tholtz@umd.edu         Phone: 301-405-4084
Senior Lecturer, Vertebrate Paleontology
Office: Geology 4106, 8000 Regents Dr., College Park MD 20742
Dept. of Geology, University of Maryland
Phone: 301-405-6965
Fax: 301-314-9661              

Faculty Director, Science & Global Change Program, College Park Scholars
Office: Centreville 1216, 4243 Valley Dr., College Park MD 20742
Fax: 301-314-9843

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        8000 Regents Drive
                        University of Maryland
                        College Park, MD 20742-4211 USA 

> -----Original Message-----
> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] On Behalf Of 
> Poekilopleuron
> Sent: Monday, December 07, 2015 6:28 AM
> To: dinosaur@usc.edu; tholtz@umd.edu
> Subject: Greatest dangers in the Hell Creek environment
> Good day!
> I would like to ask, which would be most dangerous for a human (say, time
> traveler) in the end-Cretaceous world:
> 1. Large and mid-sized theropods (Tyrannosaurus, Dakotaraptor)
> 2. Smaller theropods (Acheroraptor, Anzu...)
> 3. Large herbivorous dinosaurs; e. g. protecting nests (Triceratops, 
> Ankylosaurus, Edmontosaurus...)
> 4. Non-dinosaurian vertebrates (crocodiles, pterosaurs, sharks, mammals)
> 5. Invertebrate parasites (both ecto- and endo-, like ticks)
> 6. Microoorganisms (Trichomonas? Viruses, bacterial patogenes, etc.)
> 7. Environmental effects (volcanic activity, poisonous gases, earthquakes,
> floods)
> 8. Well, of course...rare, but devastating large impacts.
> Thank you in advance, Tom
> =