Triassic echinoids
Kier, Porter M
Triassic echinoids / Porter M. Kier - Washington Smithsonian Institution Press 1977 - iv, 88 p. : ill. ; 26 cm. - Smithsonian contributions to paleobiology ; no.30. .
Includes index.
Bibliography: p. 39-41.
76-024806 //r892
Sea urchins, Fossil
Paleontology--Triassic
Triassic echinoids / Porter M. Kier - Washington Smithsonian Institution Press 1977 - iv, 88 p. : ill. ; 26 cm. - Smithsonian contributions to paleobiology ; no.30. .
Includes index.
Bibliography: p. 39-41.
76-024806 //r892
Sea urchins, Fossil
Paleontology--Triassic