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4 entries under period topic. ×

4
extant paleogene first appearance(expression, geohistory, paleocene)
1
danian first appearance(expression, geohistory, appearance, paleocene)
1
paleocene first appearance(expression, geohistory, appearance, paleocene)
0
selandian first appearance(expression, geohistory, thenetian)
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APASmart Define. (1970). extant thanetian first appearance thesaurus. Retrieved October 2, 2026, from https://smartdefine.org/extant_thanetian_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant thanetian first appearance thesaurus" https://smartdefine.org/extant_thanetian_first_appearance/thesaurus/related (accessed October 2, 2026).
HarvardSmart Define 1970, extant thanetian first appearance thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/extant_thanetian_first_appearance/thesaurus/related>.
MLASmart Define. "extant thanetian first appearance thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/extant_thanetian_first_appearance/thesaurus/related>