Query: Plants that are Oligocene
Domain: plants
Relevant documents:
Palmoxylon
Hymenaea mexicana
Hypericum septestum
Banksieaephyllum
Acer chaneyi
Alismaticarpum
Ginkgo adiantoides
Banksieaeformis
Banksia novae-zelandiae
Acer dettermani
Calocedrus huashanensis
Metasequoia heerii
Hymenaea allendis
Acer ashwilli
Acer kenaicum