Treatise on invertebrate paleontology. Part V, Graptolithina with sections on Enteropneusta and Pterobranchia - Moore, Raymond Cecil, 1892-1974 ([S.l.] : Geological Society of America and University of Kansas Press, 1955)
Keywords: graptoliti; paleozoologie; spodní paleozoikum; graptolites; zoopaleontology; učebnice; textbooks