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351 entries under creature topic. ×

2
Coryphaenoides(noun, geohistory, chattian)
2
Cryptobranchus(noun, geohistory, paleocene)
2
Cuckoo(noun, geohistory, eocene)
2
Cucurbitaceae(noun, geohistory, paleocene)
2
Cuspidaria(noun, geohistory, eocene)
2
Cymatium(noun, geohistory, eocene)
2
Cyprinidae(noun, geohistory, eocene)
2
Cypriniformes(noun, geohistory, paleocene)
2
Daggernose shark(expression, geohistory, eocene)
2
Dairoidea(noun, geohistory, eocene)
2
Danaphos(noun, geohistory, eocene)
2
Dasyproctidae(noun, geohistory, chattian)
2
Dasyuromorphia(noun, geohistory, chattian)
2
Deer(noun, geohistory, rupelian)
2
Diaphus(noun, geohistory, eocene)
2
Diatomyidae(noun, geohistory, rupelian)
2
Dipodidae(noun, geohistory, eocene)
2
Diprotodontia(noun, geohistory, chattian)
2
Dormouse(noun, geohistory, eocene)
2
Echimyidae(noun, geohistory, chattian)
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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>