Harrington, H.J., 1956, J. Paleont. Vol. 30 No. 1, p. 56-61, pl. 15: Olenellidae with Advanced Cephalic Spines
© Copyright 2011. Division of Invertebrate Paleontology, University of Kansas.
To log in to the site, you will need your Biodiversity Institute domain username and password. If you do not know this username and password, contact the help desk at 785.864.4684 or firstname.lastname@example.org