17 entries under expression topic. ×

4
Extant Lutetian first appearance(geohistory, appearance, period, geochronolog)
4
Extant Ypresian first appearance(geohistory, appearance, period, geochronolog)
1
Cane rat(animal, geohistory, appearance)
1
Cone snail(animal, geohistory, appearance)
1
Daggernose shark(animal, geohistory, appearance)
1
Electric ray(animal, geohistory, appearance)
1
False trevally(animal, geohistory, appearance)
1
Free-tailed bat(animal, geohistory, appearance)
1
Geometer moth(animal, geohistory, appearance)
1
Jumping spider(animal, geohistory, appearance)
1
Kitefin shark(animal, geohistory, appearance)
1
Megachilid bee(animal, geohistory, appearance)
1
New World vulture(animal, geohistory, appearance)
1
Old World silverside(animal, geohistory, appearance)
1
Tsetse fly(animal, geohistory, appearance)
1
Vesper bat(animal, geohistory, appearance)
1
Wolf herring(animal, geohistory, appearance)
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APASmart Define. (1970). extant eocene first appearance thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/extant_eocene_first_appearance/thesaurus/narrower
ChicagoSmart Define. 1970. "extant eocene first appearance thesaurus" https://smartdefine.org/extant_eocene_first_appearance/thesaurus/narrower (accessed September 26, 2026).
HarvardSmart Define 1970, extant eocene first appearance thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/narrower>.
MLASmart Define. "extant eocene first appearance thesaurus" 1 January 1970. Web. 26 September 2026. <https://smartdefine.org/extant_eocene_first_appearance/thesaurus/narrower>