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380 entries under geohistory topic. ×

3
Bartonian first appearance(expression, eocene, period)
3
Chattian first appearance(expression, period, oligocene)
3
Danian first appearance(expression, period, paleocene)
3
Extant Eocene first appearance(expression, eocene, period)
3
Extant Paleocene first appearance(expression, period, paleocene)
3
Extant Thanetian first appearance(expression, period, paleocene)
3
Lutetian first appearance(expression, eocene, period)
3
Nebrius(noun, creature, paleocene)
3
Nebrius ferrugineus(expression, creature, paleocene)
3
Necturus(noun, creature, paleocene)
3
Nephrops(noun, creature, oligocene)
3
New World vulture(expression, creature, eocene)
3
Notoplax(noun, creature, oligocene)
3
Old World monkey(expression, creature, oligocene)
3
Old World silverside(expression, creature, eocene)
3
Oregonia(noun, creature, oligocene)
3
Ornithorhynchidae(noun, creature, paleocene)
3
Owl(noun, creature, paleocene)
3
Pacific giant salamander(expression, creature, paleocene)
3
Paenungulata(noun, creature, paleocene)
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APASmart Define. (1970). extant paleogene first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant paleogene first appearance thesaurus" https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, extant paleogene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related>.
MLASmart Define. "extant paleogene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/extant_paleogene_first_appearance/thesaurus/related>