Lectotype selections for Ordovician trilobites from the Girvan district, Strathclyde
Morris, Samuel Francis Tripp, Ronald P. (Ronald Pearson), 1914-
Article
1986
Bulletin of the British Museum (Natural History) Geology
40
161--176
BioStor
English
London, BM(NH),
BioStor: https://biostor.org/reference/118597