Taxonomy, evolution and biostratigraphical importance of the Llandovery graptolite Spirograptus
Loydell, David K Štorch, Petr Melchin, Michael J
Article
1993
Palaeontology
36
909--926
BioStor
English
London, Palaeontological Association, 1957-
BioStor: https://biostor.org/reference/166027
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