XXX.—On the occurrence of the genus Ptilograpsus in Britain; with notes on the Ludlow Graptolites

Henry Alleyne Nicholson

Published in Annals And Magazine of Natural History, in 1868, in volume 1, pages 238-241

Date published:1868

DOI: 10.1080/00222936808695685
BHL: 27740941
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