Silurian (late Llandovery-Ludlow) atrypid brachiopods from Gotland, Sweden and the Welsh Borderlands, Great Britain - Copper, Paul (NRC Research Press, 2004)
"NRC no. 46318"--T.p. verso
Issued by: National Research Council Canada
Includes bibliographical references (p. 139-156)
The morphology, evolution, and paleoecology of the highly successful Silurian atrypide spire-bearers is described in detail, including the documentation of several new species. Numerous detailed illustrations and plates accompany the text