Fossils of isolated land plant spores suggest land plants may have been around as long as 475 million years ago.
fˈɑːsəlz ʌv ˈaɪsəlˌeɪɾᵻd lˈænd plˈænt spˈoːɹz sədʒˈɛst lˈænd plˈænts mˌeɪhɐv bˌɪn ɚɹˈaʊnd æz lˈɔŋ æz fˈoːɹhˈʌndɹɪd sˈɛvənti fˈaɪv mˈɪliən jˈɪɹz ɐɡˈoʊ.