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60 entries under geohistory topic. ×

1
Paracrax(noun, bird, oligocene)
1
Paraphysornis(noun, bird, oligocene)
1
Parvigrus(noun, bird, oligocene)
1
Pelagornis sandersi(expression, bird, oligocene)
1
Phasmagyps(noun, bird, oligocene)
1
Phoeniconotius(noun, bird, oligocene)
1
Physornis(noun, bird, oligocene)
1
Picavus(noun, bird, oligocene)
1
Pinpanetta(noun, bird, oligocene)
1
Platydyptes(noun, bird, oligocene)
1
Presbyornis(noun, bird, oligocene)
1
Primophaps(noun, bird, oligocene)
1
Proardea(noun, bird, oligocene)
1
Psilopterus(noun, bird, oligocene)
1
Resoviaornis(noun, bird, oligocene)
1
Rupelramphastoides(noun, bird, oligocene)
1
Strigogyps(noun, bird, oligocene)
1
Taubatornis(noun, bird, oligocene)
1
Teratornithidae(noun, bird, oligocene)
1
Wilaru(noun, bird, oligocene)
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APASmart Define. (1970). oligocene bird thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/oligocene_bird/thesaurus/narrower
ChicagoSmart Define. 1970. "oligocene bird thesaurus" https://smartdefine.org/oligocene_bird/thesaurus/narrower (accessed October 2, 2026).
HarvardSmart Define 1970, oligocene bird thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/oligocene_bird/thesaurus/narrower>.
MLASmart Define. "oligocene bird thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/oligocene_bird/thesaurus/narrower>