Graptolithina with sections on Enteropneusta and Pterobranchia Treatise on Invertebrate Paleontology., R. C. Moore, Treatise on Invertebrate Paleontology V 1955 : V1-V101 text-figs. 1-72.", 1955: V1-V101. Chapter pagination: V1-V101. V87 [Zoological Record Volume 92]