BioStor
 | Fossil Hymenoptera from Florissant, Colorado T D A Cockerell (1906) Bulletin of the Museum of Comparative Zoology 50: 33-58 |
 | The type species of the genera and subgenera of bees Grace A Sandhouse (1943) Proceedings of the United States National Museum 92(3156): 519-619 |
 | A monograph on fossil bees (Hymenoptera: Apoidea) F E Zeuner and F J Manning (1976) Bulletin of The British Museum (Natural History), Geology 27: 149-268 |
 | Genus-group names of bees and supplemental family-group names Charles D Michener (1997) Scientific Papers Natural History Museum University of Kansas 1: 1-81 |