Rhynchonellata - Orthida - Orthidae
PaleoDB taxon number: 26899
Parent taxon: Orthidae according to A. Williams et al. 2000
Sister taxa: Almadenorthis, Bastamorthis, Boreadorthis, Diochthofera, Duolobella, Gutiorthis, Lenorthis, Leoniorthis, Orthambonites, Orthinae, Orthostrophella, Orthostrophia, Palaeowingella, Paralenorthis, Rogorthis, Sinorthis, Sulcatorthis, Sulevorthis, Suriorthis, Taphrorthis, Trondorthis
Subtaxa: Orthis (Finkelnburgia), Orthis acuminata, Orthis australis, Orthis berthoisi, Orthis biforata, Orthis bilobata, Orthis callactis, Orthis christianae, Orthis christianiae, Orthis decipiens, Orthis expansa, Orthis intercostata, Orthis laurentina, Orthis piger, Orthis praeumbona, Orthis reversa, Orthis spinigera, Orthis testudinaria
Type: Orthis callactis
Ecology: stationary epifaunal suspension feeder