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271 entries under geohistory topic. ×

1
Astrapotheriidae(noun, creature, eocene)
1
Aturia(noun, creature, paleocene)
1
Azibiidae(noun, creature, eocene)
1
Balbaridae(noun, creature, chattian)
1
Barytherium(noun, creature, eocene)
1
Basilosaurinae(noun, creature, eocene)
1
Bear dog(expression, creature, eocene)
1
Behemotops(noun, creature, rupelian)
1
Bemalambdidae(noun, creature, paleocene)
1
Borhyaenidae(noun, creature, eocene)
1
Bothriogenys(noun, creature, eocene)
1
Brontotheriidae(noun, creature, eocene)
1
Carcharocles angustidens(expression, creature, chattian)
1
Carpolestidae(noun, creature, paleocene)
1
Cephalomyidae(noun, creature, chattian)
1
Cercamoniinae(noun, creature, eocene)
1
Chalicothere(noun, creature, eocene)
1
Chalicotherioidea(noun, creature, eocene)
1
Ciliopagurus(noun, creature, rupelian)
1
Clavilithes(noun, creature, paleocene)
For more, visit Oligocene_first_appearance on Power Thesaurus
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APASmart Define. (1970). oligocene first appearance thesaurus. Retrieved October 2, 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 2, 2026).
HarvardSmart Define 1970, oligocene first appearance thesaurus, Smart Define, viewed 2 October, 2026, <https://smartdefine.org/oligocene_first_appearance/thesaurus/related>.
MLASmart Define. "oligocene first appearance thesaurus" 1 January 1970. Web. 2 October 2026. <https://smartdefine.org/oligocene_first_appearance/thesaurus/related>