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271 entries under geohistory topic. ×

1
Leptaucheniinae(noun, creature, chattian)
1
Leptocyon(noun, creature, rupelian)
1
Leptomerycinae(noun, creature, eocene)
1
Leptomeryx(noun, creature, eocene)
1
Limnocyon(noun, creature, eocene)
1
Litopterna(noun, creature, paleocene)
1
Lobocarcinus(noun, creature, eocene)
1
Macginitiea(noun, creature, eocene)
1
Machaeroides(noun, creature, eocene)
1
Macraucheniidae(noun, creature, eocene)
1
Mammalodontidae(noun, creature, chattian)
1
Maximucinus muirheadae(expression, creature, rupelian)
1
Megalonychidae(noun, creature, rupelian)
1
Megatheriidae(noun, creature, rupelian)
1
Merycoides(noun, creature, rupelian)
1
Merycoidodontoidea(noun, creature, eocene)
1
Mesocyon(noun, creature, rupelian)
1
Mesonychid(noun, creature, paleocene)
1
Mesonychidae(noun, creature, paleocene)
1
Mesonyx(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 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>