Rigby, J.K., Schumacher, D., and Meader, S.J., 1979, The genus Ensiferites, a Devonian astraeosponge of North America: Journal of Paleontology, v. 53, p. 475-493. Authors Rigby, J.K., Schumacher, D., and Meader, S.J. Publication Date 1979 Citation Journal of Paleontology, v. 53, p. 475-493. AzGeoBib RefNum 8583