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81 entries under noun topic. ×

2
Aequornithes(animal, geohistory, appearance)
2
Afroaves(animal, geohistory, appearance)
2
Afrotheria(animal, geohistory, appearance)
2
Aldrovanda(animal, geohistory, appearance)
2
Alligatorinae(animal, geohistory, appearance)
2
Ampullinopsis(animal, geohistory, appearance)
2
Andrias(animal, geohistory, appearance)
2
Anguillidae(animal, geohistory, appearance)
2
Apodiformes(animal, geohistory, appearance)
2
Astraea(animal, geohistory, appearance)
2
Atlantogenata(animal, geohistory, appearance)
2
Australidelphia(animal, geohistory, appearance)
2
Bathytoma(animal, geohistory, appearance)
2
Boidae(animal, geohistory, appearance)
2
Boinae(animal, geohistory, appearance)
2
Bonefishes(animal, geohistory, appearance)
2
Budgerigar(animal, geohistory, appearance)
2
Caiman(animal, geohistory, appearance)
2
Callichthyidae(animal, geohistory, appearance)
2
Caprimulgiformes(animal, geohistory, appearance)
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APASmart Define. (1970). extant paleocene first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/extant_paleocene_first_appearance/thesaurus/narrower
ChicagoSmart Define. 1970. "extant paleocene first appearance thesaurus" https://smartdefine.org/extant_paleocene_first_appearance/thesaurus/narrower (accessed October 1, 2026).
HarvardSmart Define 1970, extant paleocene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/extant_paleocene_first_appearance/thesaurus/narrower>.
MLASmart Define. "extant paleocene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/extant_paleocene_first_appearance/thesaurus/narrower>