Synonyms|0Antonyms|0|Broader|1Narrower|69Related|257
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Diplocynodon(noun, animal, geohistory, appearance)
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Discoaster(noun, animal, geohistory, appearance)
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Eurymylidae(noun, animal, geohistory, appearance)
2
Euzaphlegidae(noun, animal, geohistory, appearance)
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Fabiania(noun, animal, geohistory, appearance)
2
Ficopsis(noun, animal, geohistory, appearance)
2
Gastornis(noun, animal, geohistory, appearance)
2
Hapalodectidae(noun, animal, geohistory, appearance)
2
Henricosborniidae(noun, animal, geohistory, appearance)
2
Hyaenodontidae(noun, animal, geohistory, appearance)
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Interatheriidae(noun, animal, geohistory, appearance)
2
Isotemnidae(noun, animal, geohistory, appearance)
2
Lazarussuchus(noun, animal, geohistory, appearance)
2
Lepidopleurus(noun, animal, geohistory, appearance)
2
Litopterna(noun, animal, geohistory, appearance)
2
Mesonychid(noun, animal, geohistory, appearance)
2
Mesonychidae(noun, animal, geohistory, appearance)
2
Miacidae(noun, animal, geohistory, appearance)
2
Mixodectidae(noun, animal, geohistory, appearance)
2
Notoungulata(noun, animal, geohistory, appearance)
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APASmart Define. (1970). paleocene first appearance thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/paleocene_first_appearance/thesaurus/narrower
ChicagoSmart Define. 1970. "paleocene first appearance thesaurus" https://smartdefine.org/paleocene_first_appearance/thesaurus/narrower (accessed September 28, 2026).
HarvardSmart Define 1970, paleocene first appearance thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/paleocene_first_appearance/thesaurus/narrower>.
MLASmart Define. "paleocene first appearance thesaurus" 1 January 1970. Web. 28 September 2026. <https://smartdefine.org/paleocene_first_appearance/thesaurus/narrower>