Exploitation of graptoloid cladogenesis in Silurian stratigraphy
Rickards, R.B. (1989). Exploitation of graptoloid cladogenesis in Silurian stratigraphy, in: Holland, C.H. et al. (Ed.) A global standard for the Silurian System. Geological Series, 9: pp. 267-274 In: Holland, C.H.; Bassett, M.G. (Ed.) (1989). A global standard for the Silurian System. Geological Series, 9. National Museum of Wales: Cardiff. ISBN 0-7200-0308-3. 325 pp., more In: Geological Series. National Museum of Wales: Cardiff. ISSN 0962-0575, more | |