Evolution of the trilobite subfamily proetinae salter, 1864, and the origin, diversification, evolutionary affinity, and extinction fo the middle devonian proeid fauna... /
Bruce S. Lieberman.
-- New York : The American Museum of Natural History, 1994
- 176 p. il. --
(Bulletin of the American Museum of Natural History, ISSN 0003-0090 ; 223).