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type specimen lectotype Paleogene Eocene Mexico and Middle America unknown FEU-1006890 |  | type specimen paralectotype Paleogene Eocene Mexico and Middle America unknown FEU-1006891 |  | identified by scientist Paleogene Eocene Lutetian off Brazil ODP Leg 154 Sites 925 to 929 FEU-1009204 |  | identified by scientist Paleogene Eocene Priabonian off Brazil ODP Leg 154 Sites 925 to 929 FEU-1009205 |  | identified by scientist Paleogene Eocene off Brazil ODP Leg 154 Sites 925 to 929 FEU-1009206 |  |