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Ramskold, Lars and Werdelin, Lars. 1991. The Phylogeny and Evolution of Some Phacopid Trilobites. Cladistics. Vol. 7(1), pp. 29-74.
Project 2621: Lars Ramskold, Lars Werdelin. 1991. The Phylogeny and Evolution of Some Phacopid Trilobites. Cladistics. 7 (1):29-74.
This project has 1 bibliographic reference.