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Temporal range: 100–98 Ma Late Albian to Early Cenomanian, Cretaceous to Early Cenomanian, Late Cretaceous
Gerontoformica cretacica
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Sphecomyrminae
Tribe: Sphecomyrmini
Genus: Gerontoformica
Nel & Perrault, 2004
Type species
Gerontoformica cretacica
13 fossil species
(Species Checklist)

Sphecomyrmodes Engel & Grimaldi, 2005

Photo Gallery

  • Gerontoformica, (1).jpg
  • Gerontoformica, (2).jpg
  • Gerontoformica, (5).jpg
  • Gerontoformica, (3).jpg
  • Gerontoformica, (4).jpg



This taxon is known from Burmese amber, Kachin State, Myanmar (Early Cenomanian, Late Cretaceous) and Charentese amber, Aquitaine Basin, France (Late Albian to Early Cenomanian, Cretaceous).



The following information is derived from Barry Bolton's Online Catalogue of the Ants of the World.

  • GERONTOFORMICA [†Sphecomyrminae: †Sphecomyrmini]]
    • Gerontoformica Nel & Perrault, in Nel, Perrault, Perrichot & Néraudeau, 2004: 24. Type-species: †Gerontoformica cretacica, by original designation.
  • Taxonomic history
    • Gerontoformica incertae sedis in Formicidae: Nel, et al. 2004: 24.
    • Gerontoformica in †Sphecomyrminae: Perrichot, 2014: 168 (in text).
    • Gerontoformica in †Sphecomyrminae, †Sphecomyrmini: Borysenko, 2017: 15
    • Gerontoformica as senior synonym of †Sphecomyrmodes: Barden & Grimaldi, 2016: 4, and in supplemental information (not paginated).
  • SPHECOMYRMODES [junior synonym of †Gerontoformica]
    • Sphecomyrmodes Engel & Grimaldi, 2005: 5. Type-species: †Sphecomyrmodes orientalis, by original designation.
  • Taxonomic history
    • Sphecomyrmodes in †Sphecomyrminae: Engel & Grimaldi, 2005: 5.
    • Sphecomyrmodes as genus: Barden & Grimaldi, 2014: 18.
    • Sphecomyrmodes as junior synonym of †Gerontoformica: Barden & Grimaldi, 2016: 4, and in supplemental information (not paginated).
    • Sphecomyrmodes references: Barden & Grimaldi, 2014: 18 (diagnosis, all species key).