Family Chionidae Bonaparte 1832 (sheathbill)
PaleoDB taxon number: 372779
Parent taxon: Charadriiformes according to J. F. Clements et al. 2017
Sister taxa: Alcae, Alcidae, Burhinidae, Charadrii, Charadriidae, Cimolopterygidae, Dakotornithidae, Glareolidae, Graculavidae, Graculavus, Haematopodidae, Hydrophasianus, Jacanidae, Lari, Laridae, Laromorphae, Limicolae, Panalcidae, Parrae, Pedionomae, Pedionomidae, Pluvianidae, Recurvirostridae, Rhinoptilus, Sarjeantopodus, Scolopaci, Scolopacidae, Stercorariidae, Telmatornis, Telmatornithidae, Thinocoridae, Turnicidae, Volgavis
Subtaxa: Chionis