TY  - BOOK
AU  - Kier, Porter M.
TI  - Echnoids from the triassic( St. Cassian) of italy, their lantern supports, and a revised phylogeny of triassic echinoids
T2  - Smithsonian contributions to paleobiology
U1  - 563.95 
PY  - 1984///
CY  - Washington
PB  - Smithsonian Institution Press
ER  -