Alyssa Bell; Kelly J. Irwin; Leo Carson Davis (2015). "Hesperornithiform birds from the Late Cretaceous (Campanian) of Arkansas, USA". Transactions of the Kansas Academy of Science. 118 (3–4): 219–229. doi:10.1660/062.118.0305. JSTOR24887762. S2CID83921936.
Stolpe, M (1935). "Colymbus, Hesperornis, Podiceps: ein Vergleich ihrer hinteren extremitat". Journal für Ornithologie. 83: 115–128. doi:10.1007/BF01908745. S2CID11147804.
Alyssa Bell; Kelly J. Irwin; Leo Carson Davis (2015). "Hesperornithiform birds from the Late Cretaceous (Campanian) of Arkansas, USA". Transactions of the Kansas Academy of Science. 118 (3–4): 219–229. doi:10.1660/062.118.0305. JSTOR24887762. S2CID83921936.
Alyssa Bell; Kelly J. Irwin; Leo Carson Davis (2015). "Hesperornithiform birds from the Late Cretaceous (Campanian) of Arkansas, USA". Transactions of the Kansas Academy of Science. 118 (3–4): 219–229. doi:10.1660/062.118.0305. JSTOR24887762. S2CID83921936.
Stolpe, M (1935). "Colymbus, Hesperornis, Podiceps: ein Vergleich ihrer hinteren extremitat". Journal für Ornithologie. 83: 115–128. doi:10.1007/BF01908745. S2CID11147804.