Vendrasco M.J., Kouchinsky A., Porter S.M., Fernandez Ch.Z. (2011). Phylogeny and escalation in Mellopegma and other Cambrian molluscs. Paleontologia Electronica. 14(2): 1-44.
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Vendrasco M.J., Kouchinsky A., Porter S.M., Fernandez Ch.Z.
2011
Phylogeny and escalation in Mellopegma and other Cambrian molluscs