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351 entries under creature topic. ×

2
Electric ray(expression, geohistory, eocene)
2
Elphidium(noun, geohistory, eocene)
2
Enoplosus armatus(expression, geohistory, paleocene)
2
Epinephelus(noun, geohistory, eocene)
2
Erinaceidae(noun, geohistory, eocene)
2
Euarchonta(noun, geohistory, paleocene)
2
Euarchontoglires(noun, geohistory, paleocene)
2
Eulipotyphla(noun, geohistory, eocene)
2
Eupleridae(noun, geohistory, chattian)
2
Eurylaimides(noun, geohistory, eocene)
2
Fabaceae(noun, geohistory, paleocene)
2
False trevally(expression, geohistory, eocene)
2
Felidae(noun, geohistory, chattian)
2
Flagtail(noun, geohistory, eocene)
2
Flatfish(noun, geohistory, paleocene)
2
Flying squirrel(expression, geohistory, rupelian)
2
Free-tailed bat(expression, geohistory, eocene)
2
Fungus-growing ants(expression, geohistory, paleocene)
2
Galliformes(noun, geohistory, paleocene)
2
Gavialidae(noun, geohistory, eocene)
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APASmart Define. (1970). extant oligocene first appearance thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/extant_oligocene_first_appearance/thesaurus/related
ChicagoSmart Define. 1970. "extant oligocene first appearance thesaurus" https://smartdefine.org/extant_oligocene_first_appearance/thesaurus/related (accessed October 1, 2026).
HarvardSmart Define 1970, extant oligocene first appearance thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/extant_oligocene_first_appearance/thesaurus/related>.
MLASmart Define. "extant oligocene first appearance thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/extant_oligocene_first_appearance/thesaurus/related>