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Re: Nocturnal crocs?



> relaxation on mammal size constraints toward the very end
> of the Cretaceous, brought them over the dinosaur nest/juvenile predation
> threshold.


*Gobiconodon* (cat-sized) is EK. *Kollikodon* (the _1-m-long_ platypus with
apparently a beak and 4 molars per dentary, probably harmless to eggs) is
also EK. *Stagodon* is supposed to have been much like the Tasmanian Devil
rather than an important nest predator...
What should have caused such a relaxation on mammal size constraints, and
where do you find such a relaxation?


Must've missed the post awhile back about the largest known Mesozoic mammal from the _Early_ Cretaceous:

http://www.cmnh.org/fun/dinosaur-archive/2001May/msg00969.html

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jerry D. Harris
Dept of Earth & Environmental Science
University of Pennsylvania
240 S 33rd St
Philadelphia PA  19104-6316
Phone: (215) 573-8373
Fax: (215) 898-0964
E-mail: jdharris@sas.upenn.edu
and     dinogami@hotmail.com
http://www.sas.upenn.edu/~jdharris

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