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Re: Tyrannosaur eggs amd brooding
> In Montana, alleged eggs of Troodontids also were laid in a linear row.
>So does this tell us anything about brooding behavior in the Tyrannosauridae
>and the Troodontidae? Could these theropods be engaged in "drop 'em and
>forget 'em" egg-laying? Does this indicate that T. rex chicks were deadly
>12-inch terrors right after hatching (requiring no matriarchal or patriarchal
>care-taking)? And if Oviraptor chicks required parental care-taking in a
>nest, what was unusual about the Tyrannisauridae and Troodontidae chicks
>such that they didn't need a nest?
The null hypothesis, on phylogenetic basis, is that all dinosaurs used some
degree of parental care, as both the in-group (birds) and the closest
surviving outgroup (crocodillians) protect the nest and the young for some
Thomas R. Holtz, Jr.
Vertebrate Paleontologist in Exile Phone: 703-648-5280
U.S. Geological Survey FAX: 703-648-5420
Branch of Paleontology & Stratigraphy
MS 970 National Center
Reston, VA 22092