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Reference: L.B. Halstead, 1993
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Chapter

Halstead, L.B. 1993. Agnatha. In M.J. Benton (ed.), The Fossil Record 2. Chapman & Hall, London: [573]-581.

New: Original name, rank & spelling

†Loganellidae (Family) Halstead, 1993, nom. nud.Page: 576 ("fam. nov.").
†Qingmenaspididae (Family) Halstead, 1993, nom. nud.Page: 580 ("fam. nov.").

New: Subsequent spelling

†Aseraspis (Genus) Halstead, 1993, orth. inval.Page: [573] ("Aseraspis canadensis Dineley and Loeffler, 1976").
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Last updated: 21 Sep 2025