Kier, Porter M.

Erchinoids from the Triassic (St. Cassian) of Italy, their lantern supports and a revised phylogeny of Triassic echinoids / Porter M. Kier - Washington : Smithsonian Institution Press, 1984 - 41 p. ; 27 cm. - Smithsonian contributions to paleobiology no.56 .


Sea urchins, Fossil
Paleontology--Triassic