Editing Liriodendron (section)

==Paleo history==
Liriodendrons have been reported as fossils from the [[Late Cretaceous]] and early [[Tertiary]] of North America and central Asia. They are known widely as Tertiary-age [[fossil]]s in Europe and well outside their present range in Asia and North America, showing a once-[[wikt:circumpolar|circumpolar]] northern distribution. Like many [[Arcto-Tertiary Geoflora|"Arcto-Tertiary"]] genera, ''Liriodendron'' apparently became extinct in Europe due to the east-west orientation of its mountains that blocked southward migration during the large-scale [[glaciation]] and aridity of climate during glacial phases.<ref name="Nature-Plants-2019">{{cite journal |display-authors=etal |last1=Chen |first1=Jinhui |title=Liriodendron genome sheds light on angiosperm phylogeny and species–pair differentiation |journal=Nature Plants |date=January 2019 |volume=5 |issue=1 |pages=18–25 |doi=10.1038/s41477-018-0323-6 |bibcode=2019NatPl...5...18C |url=http://evolution.ac.cn/PDF/Chen%20J%20et%20al-2019.pdf}}</ref>

The genus name should not be confused with an extinct genus known only through fossils. That is ''[[Lepidodendron]],'' which entails an important group of long-extinct [[pteridophyte]]s in the phylum [[Lycopodiophyta]] that are well known [[Paleozoic]] [[Carboniferous|coal-age]] fossils).{{cn|date=June 2024}}

[[File:Geology (1907) (14753394636).jpg|thumb|''Liriodendron giganteum'' (a), an extinct [[Late Cretaceous]] species.]]