Chroicocephalus philadelphia Ord 1815 (Bonaparte's gull)
PaleoDB taxon number: 368532
Alternative combinations: Larus (Chroicocephalus) philadelphia, Larus philadelphia, Sterna philadelphia
Belongs to Chroicocephalus according to J. F. Clements et al. 2017
Sister taxa: Chroicocephalus bulleri, Chroicocephalus cirrocephalus, Chroicocephalus hartlaubii, Chroicocephalus novaehollandiae, Chroicocephalus ridibundus