• Thumbnail for Opisthocomidae
    panarium Olson 1992 Genus ?†Onychopteryx Cracraft 1971 (Early Eocene of Argentina) – falconid? A nomen dubium Species †Onychopteryx simpsoni Cracraft 1971...
    10 KB (932 words) - 17:17, 16 September 2023
  • Thumbnail for Hoatzin
    a link between the hoatzin and the gamebirds. The fragmentary fossil Onychopteryx from the Eocene of Argentina[citation needed] and the quite complete...
    28 KB (3,116 words) - 09:24, 6 September 2024
  • Opisthocomidae †Foro? †Hoazinavis †Hoazinoides †Namibiavis †Onychopteryx? Opisthocomus †Protoazin...
    2 KB (109 words) - 13:08, 31 December 2023
  • Opisthocomidae †Foro? †Hoazinavis †Hoazinoides †Namibiavis †Onychopteryx? Opisthocomus †Protoazin...
    2 KB (127 words) - 15:19, 11 May 2024
  • Opisthocomidae †Foro? †Hoazinavis †Hoazinoides †Namibiavis †Onychopteryx? Opisthocomus †Protoazin...
    1 KB (65 words) - 13:09, 31 December 2023
  • Opisthocomidae †Foro? †Hoazinavis †Hoazinoides †Namibiavis †Onychopteryx? Opisthocomus †Protoazin...
    3 KB (259 words) - 13:08, 31 December 2023
  • Thumbnail for List of fossil bird genera
    Olson 1992 (Early Eocene) - cuculiform? †Hoatzi panarium Thomas 1996 †Onychopteryx simpsoni Cracraft 1971 (Early Eocene of Argentina) – falconid? A nomen...
    245 KB (19,042 words) - 06:56, 27 September 2024
  • Valid Howard Early Pliocene Almejas Formation  Mexico A mancaline alcid Onychopteryx Gen. et sp. nov. Valid Cracraft Early Eocene Casamajor Formation  Argentina...
    18 KB (924 words) - 08:21, 11 November 2024