Table 1 in A new species of Pheidole (Formicidae, Myrmicinae) from Dominican amber with a review of the fossil records for the genus

Table 1. Summary of the Pheidole species known from the fossil record.
SpeciesDepositCastePeriod† Pheidole cordata (Holl, 1829), incertae sedis in MyrmicinaeBaltic amber (34-48 m.y.) (Seyfullah et al. 2018)Minor workerEocene† Pheidole tertiaria Carpenter, 1930Florissant, Colorado (34.07 ± 10 m.y.) (Evanoff et al. 2001)QueenOligocene† Pheidole tethepa Wilson, 1985Dominican amber (16-19 m.y.) (Seyfullah et al. 2018)Minor workerMiocene† Pheidole primigenia Baroni Urbani, 1995Dominican amber (16-19 m.y.) (Seyfullah et al. 2018)Minor workerMiocene† Pheidole rasnitsyni Dubovikoff, 2011Copal (<1 Ma) (Perkovsky 2016)Minor workerHolocene† Pheidole anticua Casadei Ferreira, Chaul & Feitosa, 2019, sp. n.Dominican amber (16-19 m.y.) (Seyfullah et al. 2018)Major workerMiocene