Name Authorship Pages Forms Locality Notes
†Orbicapitia Hong, 2002 601
†Orbicapitia reticulata Hong, 2002 602, figs. 538-546 w. CHINA (Liaoning, Fushun Amber, Eocene)
†Orbigastrula Hong, 2002 552
†Orbigastrula guchengziensis Hong, 2002 553, figs. 375-381 w. CHINA (Liaoning, Fushun Amber, Eocene)
Orectognathiti Brown, 1952g 10 (footnote)
Orectognathus Smith, 1853 227
Orectognathus alligator Taylor, 1980a 778, figs. 4-6 w. AUSTRALIA (Queensland)
Orectognathus antennatus Smith, 1853 228, pl. 21, fig. 9 w. NEW ZEALAND
Orectognathus antennatus var. howensis Wheeler, 1927i 145, fig. 7 w. AUSTRALIA (New South Wales)
Orectognathus antennatus var. septentrionalis Forel, 1910b 51 w. AUSTRALIA (New South Wales)
Orectognathus biroi Szabó-Patay, 1926 351, fig. B,b w. NEW GUINEA (Papua New Guinea)
Orectognathus chyzeri Emery, 1897c 571, pl. 14, figs. 1, 2 w. NEW GUINEA (Papua New Guinea)
Orectognathus clarki Brown, 1953k 94, figs. 1b, 2c w.q.m. AUSTRALIA (Victoria, Tasmania, New South Wales, Queensland)
Orectognathus coccinatus Taylor, 1980a 779, figs. 7-9 w.q. AUSTRALIA (Queensland)
Orectognathus csikii Szabó-Patay, 1926 351, fig. A,a w. NEW GUINEA (Papua New Guinea)
Orectognathus darlingtoni Taylor, 1977 606, figs. 31-36 w.q.k. AUSTRALIA (Queensland)
Orectognathus echinus Taylor & Lowery, 1972 310, pl. 2 w.q. NEW GUINEA (Papua New Guinea)
Orectognathus elegantulus Taylor, 1977 589, figs. 11-13 w.q. AUSTRALIA (Queensland)
Orectognathus horvathi Szabó-Patay, 1926 349, fig. C,c w. NEW GUINEA (Papua New Guinea)
Orectognathus hystrix Taylor & Lowery, 1972 307, pl. 1 w.m. NEW GUINEA (Papua New Guinea)
Orectognathus kanangra Taylor, 1980a 776, figs. 1-3 w. AUSTRALIA (New South Wales)
Orectognathus longispinosus Donisthorpe, 1941h 58 w. NEW GUINEA (Indonesia)
Orectognathus mjobergi Forel, 1915b 38, pl. 2, figs. 3, 4 w.q. AUSTRALIA (Queensland)
Orectognathus mjobergi var. unicolor Forel, 1915b 39 (in text) w. AUSTRALIA (Queensland)
Orectognathus nanus Taylor, 1977 605, figs. 20-22 w.q. AUSTRALIA (Queensland)
Orectognathus nigriventris Mercovich, 1958 195, fig. w. AUSTRALIA (New South Wales) Date of publication 28.vii.1958.
Orectognathus parvispinus Taylor, 1977 603, figs. 17-19 w.q. AUSTRALIA (Queensland)
Orectognathus perplexus Smith, 1876c 491 w.q. NEW ZEALAND
Orectognathus phyllobates Brown, 1958b 25, fig. 4 w. AUSTRALIA (Queensland)
Orectognathus robustus Taylor, 1977 599, figs. 14-16 w.q. AUSTRALIA (Queensland)
Orectognathus roomi Taylor, 1977 606, figs. 24-27 w. NEW GUINEA (Papua New Guinea)
Orectognathus rostratus Lowery, 1967 137, figs. 1, 2 w.q. AUSTRALIA (New South Wales)
Orectognathus sarasini Emery, 1914f 416 w.m. NEW CALEDONIA
Orectognathus satan Brown, 1953k 102, fig. 3 w.q. AUSTRALIA (Queensland)
Orectognathus sexspinosus Forel, 1915b 39, pl. 2, figs. 1, 2 w.q.m. AUSTRALIA (Queensland)
Orectognathus velutinus Taylor, 1977 610, figs. 37-42 w. NEW GUINEA (Papua New Guinea)
Orectognathus versicolor Donisthorpe, 1940a 46 w. AUSTRALIA (Queensland)
Oreomyrma Wheeler, 1914e 118 (in text) [as subgenus of Myrmica]
Ornatinoda Enzmann, 1944 61 [as "branch" of Pseudomyrma]
Orthocrema Santschi, 1918d 182 [as subgenus of Crematogaster]
Orthocrema esterelana Bernard, 1978b 43, fig. 1 w.q.m. FRANCE
Orthonotomyrmex Ashmead, 1906 31
Orthonotus Ashmead, 1905c 384
Otomyrmex Forel, 1891c 147 [as subgenus of Cataulacus]
†Ovalicapito Hong, 2002 596
†Ovalicapito fushunensis Hong, 2002 596, figs. 519-527 w. CHINA (Liaoning, Fushun Amber, Eocene)
†Ovaligastrula Hong, 2002 599
†Ovaligastrula xilutianensis Hong, 2002 599, figs. 528-537 w. CHINA (Liaoning, Fushun Amber, Eocene)
Overbeckia Viehmeyer, 1916a 151
Overbeckia jambiensis Klimeš, 2022 569, figs. 4, 7 w. INDONESIA (Sumatra)