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journalAt: Contributions from the Museum of Paleontology, University of Michigan, 18, 3 By: Arnold C. A., Daugherty L. H.
journalAt: Earth and environmental science transactions of the Royal Society of Edinburgh, 113, 2 By: Morales-Toledo J., Mendoza-Ruiz A. C., Cevallos-Ferriz S. R. S.
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journalAt: Palaeontologia Electronica, 17, 1.21A By: Meller B.
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