Ostracoda - Podocopida - Bairdiidae
Parent taxon: Bairdiidae according to S. Crasquin 2008
Sister taxa: Abrobairdia, Acratina, Actuaria, Anisobairdia, Arcibairdia, Bairdia, Bairdiacypris, Bairdiinae, Bairdiolites, Bispinacratia, Bohlenatia, Carinobairdiinae, Ceratobairdia, Ceratobairdiinae, Fabalicypris, Heterobairdia, Isobythocypris, Kempfina, Krausella, Lanczichebairdia, Lobobairdia, Mirabairdia, Orthobairdia, Parabairdiacypris, Paracypris, Paramacrocypris, Praelobobairdia, Praezabythocypris, Ptychobairdia, Pustulobairdia, Sinabairdia, Spinobairdia, Spinocypris, Triebelininae, Truncobairdia, Urobairdia, Vanganardia, Xixionopsis, Bairdianella, Parabairdianella
Subtaxa: Petasobairdia bicornuta, Petasobairdia bidentata, Petasobairdia collini, Petasobairdia crassa, Petasobairdia gombasekensis, Petasobairdia kozuri, Petasobairdia longispinosa, Petasobairdia nantongensis, Petasobairdia ophistocerata, Petasobairdia subnantongensis, Petasobairdia tricornuta
Ecology: epifaunal detritivore-grazer