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271 entries under geohistory topic. ×

1
Dichobunidae(noun, creature, eocene)
1
Dinocerata(noun, creature, paleocene)
1
Dinopanorpidae(noun, creature, paleocene)
1
Diplocynodon(noun, creature, paleocene)
1
Diplocynodontinae(noun, creature, eocene)
1
Diprotodontidae(noun, creature, chattian)
1
Discoaster(noun, creature, paleocene)
1
Dolichoderus vectensis(expression, creature, eocene)
1
Echinopedinidae(noun, creature, eocene)
1
Ecphora(noun, creature, eocene)
1
Ectopocynus(noun, creature, rupelian)
1
Enaliarctos(noun, creature, chattian)
1
Enhydrocyon(noun, creature, rupelian)
1
Enhydrocyon basilatus(expression, creature, chattian)
1
Entelodont(noun, creature, eocene)
1
Eocardiidae(noun, creature, chattian)
1
Eomyidae(noun, creature, eocene)
1
Eomysticetidae(noun, creature, chattian)
1
Eosimiidae(noun, creature, eocene)
1
Epoicotheriidae(noun, creature, eocene)
For more, visit Oligocene_first_appearance on Power Thesaurus
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APASmart Define. (1970). oligocene first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/oligocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "oligocene first appearance thesaurus" https://smartdefine.org/oligocene_first_appearance/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, oligocene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/oligocene_first_appearance/thesaurus/related>.
MLASmart Define. "oligocene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/oligocene_first_appearance/thesaurus/related>