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69 entries under appearance topic. ×

2
Toxodonta(noun, animal, geohistory)
2
Triisodontidae(noun, animal, geohistory)
2
Tytthaena(noun, animal, geohistory)
2
Uintatheriidae(noun, animal, geohistory)
2
Umayodus(noun, animal, geohistory)
2
Velates(noun, animal, geohistory)
2
Viverravidae(noun, animal, geohistory)
2
Xenungulata(noun, animal, geohistory)
1
Escavadodontidae(noun, animal, geohistory)
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APASmart Define. (1970). paleocene first appearance thesaurus. Retrieved September 30, 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 30, 2026).
HarvardSmart Define 1970, paleocene first appearance thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/paleocene_first_appearance/thesaurus/narrower>.
MLASmart Define. "paleocene first appearance thesaurus" 1 January 1970. Web. 30 September 2026. <https://smartdefine.org/paleocene_first_appearance/thesaurus/narrower>