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.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
Stolpe, M (1935). "Colymbus, Hesperornis, Podiceps: ein Vergleich ihrer hinteren extremitat". Journal für Ornithologie. 83: 115–128. doi:10.1007/BF01908745.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
Bell, Alyssa; Wu, Yun-Hsin; Chiappe, Luis (2019). "Morphometric comparison of the Hesperornithiformes and modern diving birds". Palaeogeography, Palaeoclimatology, Palaeoecology. 513: 196–207. Bibcode:2019PPP...513..196B. doi:10.1016/j.palaeo.2017.12.010.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
harvard.edu
adsabs.harvard.edu
Bell, Alyssa; Wu, Yun-Hsin; Chiappe, Luis (2019). "Morphometric comparison of the Hesperornithiformes and modern diving birds". Palaeogeography, Palaeoclimatology, Palaeoecology. 513: 196–207. Bibcode:2019PPP...513..196B. doi:10.1016/j.palaeo.2017.12.010.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)
jstor.org
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.Parameter |s2cid= yang tidak diketahui akan diabaikan (bantuan)