TY  - RPRT
TI  - Volume II: The vertebrata of the Cretaceous formations of the West
AU  - Ferdinand Vandeveer Hayden
AU  - Edward D. Cope
PY  - 1875
DO  - 10.3133/70038952
UR  - https://pubs.usgs.gov/publication/70038952
ID  - 70038952
ER  -