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351 entries under creature topic. ×

2
Gemmula(noun, geohistory, paleocene)
2
Geometer moth(expression, geohistory, eocene)
2
Geometridae(noun, geohistory, eocene)
2
Glaucosoma(noun, geohistory, eocene)
2
Glires(noun, geohistory, paleocene)
2
Gnathophis(noun, geohistory, paleocene)
2
Gnomefish(noun, geohistory, eocene)
2
Gopher(noun, geohistory, eocene)
2
Grebe(noun, geohistory, chattian)
2
Ground squirrel(expression, geohistory, rupelian)
2
Gull(noun, geohistory, rupelian)
2
Gundi(noun, geohistory, rupelian)
2
Halfbeak(noun, geohistory, eocene)
2
Haplorhini(noun, geohistory, paleocene)
2
Hemerocoetes(noun, geohistory, rupelian)
2
Hemipristis(noun, geohistory, eocene)
2
Heron(noun, geohistory, paleocene)
2
Hexaplex(noun, geohistory, paleocene)
2
Hexapodidae(noun, geohistory, paleocene)
2
Hoatzin(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>