Some thoughts on convergence and divergence in the Graptolithina
By: [by] Nancy Hartshorne Kirk.
Series: Publications - Dept. of Geology ; no. 5
Publisher: University College of Wales, Department of Geology
Published: 1974
Place of publication: Aberystwyth (Aberystwyth, Cardiganshire)
Language: eng
Number of pages: 31
Subjects: Graptolites.; Evolution.
Notes: Bibliography: leaves 28-29.
Cover title.