English Callovian (middle Jurassic) perisphinctid ammonites
By: B.M. Cox
Series: Monograph of the Palaeontographical Society; Publication -- no. 575
Publisher: The Palaeontographical Society
Published: 1988
Place of publication: London
Language: eng
Subjects: Ammonoidea; Paleontology
Notes: Abstract in French, German and Russian.

"Issued as part of volume 140 for 1986" -- Pt. 1, verso t.p.

Bibliography: pt. 1, p. i-v.