mass death assembleges of dinosaur species

[John Schneiderman <dino@revelation.unomaha.edu>]

Most of the dinosaur genera and species listed are known from bits and 
pieces of a single or parts of a couple of animals.  Which dinosaur 
genera or dinosaur species are known from mass death assembleges or from 
high concentration in a realitively small area? (especially if age 
sequences and sex of individuals can be considered)

---John Schneiderman (dino@revelation.unomaha.edu)