DONOVAN, D. T.; GETTY, T. A. - The University of Kansas Paleontological Contributions Paper 62, 63 June 15, 1973

The University of Kansas Paleontological Institute. Staple Bound, 8vo. the influence of theoretical ideas on ammonite classification from hyatt to trueman. a revision of the generic classification of the family echioceratidae (cephalopoda, ammonoidea) (lower jurassic). Front lightly rubbed with college stamp. Very Good.