Can we tell if any dinosaurs observed semelparity?

[Anthony Docimo <keenir@hotmail.com>]

I was reading an essay by David Quammen about semelparity in bamboo and salmon, 
and my thought was "could sauropods do this?  the long-lived females lay their 
eggs and leave them to the males, while the females limp away to draw the 
predators *away* from the eggs and males."
 
 
 
Is there any way to tell which, if any, of the dinosaurs practiced semelparity? 
   (having a long long life, breeding once & producing scores of young, then 
dying)
 
 
thank you.
                                          
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