• Combination in †Gerontoformica: Barden & Grimaldi, 2016: in supplemental information (not paginated).
• Uncertain placement to species group: Boudinot et al., 2020: 30.
• Status as species: Barden, 2017: 3.
• Nomen dubium: Boudinot et al., 2022: 1362.

Obsolete combinations

• †Sphecomyrmodes rugosus

Citations

• Barden, P. 2017. Fossil ants (Hymenoptera: Formicidae): ancient diversity and the rise of modern lineages. Myrmecological News 24:1-30. PDF
• Barden, P.; Grimaldi, D. A. 2014. A diverse ant fauna from the mid-Cretaceous of Myanmar (Hymenoptera: Formicidae). PLoS ONE 9 (4):e93627. 10.1371/journal.pone.0093627 PDF
• Barden, P.; Grimaldi, D. A. 2016. Adaptive radiation in socially advanced stem-group ants from the Cretaceous. Current Biology 26:515-521. 10.1016/j.cub.2015.12.060 PDF
• Boudinot, B. E.; Perrichot, V.; Chaul, J. C. M. 2020. †Camelosphecia gen. nov., lost ant-wasp intermediates from the mid-Cretaceous (Hymenoptera, Formicoidea). ZooKeys 1005:21-55. 10.3897/zookeys.1005.57629 PDF
• Boudinot, B. E.; Richter, A.; Katzke, J.; Chaul, J. C. M.; Keller, R. A.; Economo, E. P.; Beutel, R. G.; Yamamoto, S. 2022. Evidence for the evolution of eusociality in stem ants and a systematic revision of †Gerontoformica (Hymenoptera: Formicidae). Zoological Journal of the Linnean Society 195:1355-1389. 10.1093/zoolinnean/zlab097/6523228 PDF