Template:Harrington et al., 1959

• Harrington, H.J., Henningsmoen, G., Howell, B.F., Jaanusson, V., Lochman-Balk, C., Moore, R.C., Poulsen, C., Rasetti, F., Richter, E.(†), Richter, R.(†), Schmidt, H., Sdzuy, K., Struve, W., Tripp, R., Weller, J.M. & Whittington, H.B. 1959. Trilobita. Systematic descriptions. In: Moore, R.C. (ed.): Treatise on Inver­tebrate Paleontology, O, Arthropoda 1, O170–O540. Ge­ological Society of America and University of Kansas Press, Lawrence, Kansas. DOI: 10.17161/dt.v0i0.5609 .  
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