Species / Platyoptera Extenta
Stromboidea
Original description of Aporrhais (Platyoptera) extenta by Conrad, 1855, p. 260:
Locus typicus: Jackson, Hinds County, Mississippi, USA. Stratum typicum: Moody's Branch Formation, Jackson Group, upper Eocene Aporrhais (Platyoptera) extenta Conrad in Wailes, 1854, pl. XVI, fig. 3 Specimens from institutional collections: Platyoptera extenta (Conrad in Wailes, 1854); Eocene; Town Creek, Jackson, Hinds County, Mississippi, USA; Coll. BM(NH) no. GG12761; Copyright BM(NH) References:
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