Tyrannosaur eggs amd brooding

[Phillip Bigelow <n8010095@henson.cc.wwu.edu>]

:> The alleged eggs of Tyrannosaurus bataar occur in pairs, possibly 
:> arranged in a linear row.  The number of pairs in a linear row, however, 
:> is unknown.
:> 
:> 
>       We have a pair of tyrannosaurid eggs in the geology museum here at
>ASU.  The species and genus are unknown (I haven't spoken with Dr. Dietz 
>about these eggs, so I can only tell you what it says on the display 
>placard.)  The two eggs are pretty broken up, but the basic form is 
>rather like a pair of giant Tylenol.  They're about 16 inches long, but I 
>imagine they would be compressed to 12 inches or so if they weren't so 
>broken up.  The matrix has only been partially removed from them, so they 
>are still oriented as they were found.  They lie almost parallel to one 
>another, and at first glance look like the counter-piece of a two-toed 
>footprint.  I do not know if more than these two eggs were found.  
>Locality? Horizon? Age? Sorry, I don't know, but it wouldn't be difficult 
>to find out if someone wants more info.

  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?  Is _anybody_ doing site-taphonomy at
these valuable localities, or are the eggs just being hacked out of the
ground?!