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59 entries under oligocene topic. ×

2
Passeroidea(noun, creature, geogistory)
2
Paucituberculata(noun, creature, geogistory)
2
Phalangeriformes(noun, creature, geogistory)
2
Phiomorpha(noun, creature, geogistory)
2
Pimelodidae(noun, creature, geogistory)
2
Protoma(noun, creature, geogistory)
2
Pupfish(noun, creature, geogistory)
2
Rhabdammina(noun, creature, geogistory)
2
Rhinochimaeridae(noun, creature, geogistory)
2
River dolphin(expression, creature, geogistory)
2
Sciaenidae(noun, creature, geogistory)
2
Scutella(noun, creature, geogistory)
2
Scutellidae(noun, creature, geogistory)
2
Somniosus(noun, creature, geogistory)
2
Suidae(noun, creature, geogistory)
2
Sylvioidea(noun, creature, geogistory)
2
Trachinus(noun, creature, geogistory)
2
Triloculinella(noun, creature, geogistory)
0
paleocene first appearance(expression, geohistory, period)
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APASmart Define. (1970). rupelian first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/rupelian_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "rupelian first appearance thesaurus" https://smartdefine.org/rupelian_first_appearance/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, rupelian first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/rupelian_first_appearance/thesaurus/related>.
MLASmart Define. "rupelian first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/rupelian_first_appearance/thesaurus/related>