Heptranchias howellii (Reed, 1946) (Selachii, Hexanchidae) in the Eocene of the United States and British Columbia / by Bruce J. Welton.
Material type: TextSeries: Paleobios ; no. 17 | California. Contributions ; Publication details: Berkeley : University of California, Museum of Paleontology, 1974.Description: 15 p. : ill. ; 23 cmSubject(s): DDC classification:- 560.8 s 567/.3
- QE701 .P46 no. 17 QE852.E6
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Cover title.
Bibliography: p. 14-15.
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