Pygurostoma pasionensis, a Cretaceous echinoid from Guatemala. American Museum novitates ; no. 1422

Cooke, C. Wythe (Charles Wythe), b. 1887.2005-10-062005-10-061949http://hdl.handle.net/2246/43033 p. : ill. ; 24 cm.Includes bibliographical references (p. 3).715085 bytesapplication/pdfen-USQL1 .A436 no.1422, 1949Pygurostoma pasionensis.Sea urchins, Fossil -- Guatemala.Echinodermata, Fossil -- Guatemala.Paleontology -- Cretaceous -- Guatemala.Paleontology -- Guatemala.Pygurostoma pasionensis, a Cretaceous echinoid from Guatemala. American Museum novitates ; no. 1422Cretaceous echinoid from Guatemalatext