Pelycosaurian reptiles from the middle Pennsylvanian of North America.
Series: Bulletin of the Museum of Comparative Zoology, Harvard University, v. 144, no. 2; Bulletin of the Museum of Comparative Zoology ;; v. 144, no. 2.
Publisher: Harvard University
Published: 1972
Place of publication: Cambridge
Language: eng
Number of pages: 61
Subjects: Pelycosauria -- North America.; Paleontology -- Pennsylvanian.; Paleontology -- North America.
Notes: Bibliography: p. 60-61.
Cover title.