Elliott, D.K., 1984. A New Subfamily of the Pteraspididae (Agnatha, Heterostraci) from the Upper Silurian and Lower Devonian of Arctic Canada. Palaeontology 27 (1): 169-197, pls. 22-24. ≡
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Elliott, D.K., Mark-Kurik, E. & Daeschler, E.B., 2004. A revision of Obruchevia (Psammosteida: Heterostraci) and a description of a new obrucheviid from the Late Devonian of the Canadian Arctic. Acta Univ. Latv. 679: 22-45. ≡
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Elliott, D.K., Schultze, H.-P. & Blieck, A., 2015. A New Pteraspid (Agnatha, Heterostraci) from the Lower Devonian Drake Bay Formation, Prince of Wales Island, Nunavut, Arctic Canada, and Comments on Environmental Preferences of Pteraspids. J. Vert. Paleontol. 35 (6) e1005098: [1]-10. ≡
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Elliott, D.K., Lassiter, L.S. & Blieck, A., 2021. A phylogenetic analysis of the heterostracan jawless vertebrate family Cyathaspididae. Acta Palaeontol. Pol. 66 (3): 631-640. ≡
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