Gleichenia |
Gleichenia alpina
|
Nd |
Nd |
|
Gleichenia |
Gleichenia angulata
|
Eurasia |
Middle Jurassic |
Early Tertiary |
Gleichenia |
Gleichenia angulata
|
North America |
Middle Jurassic |
Early Tertiary |
Gleichenia |
Gleichenia angulata
|
Australia |
Middle Jurassic |
Early Tertiary |
Gleichenia |
Gleichenia circinidites
|
Eurasia |
Middle Jurassic |
Early Tertiary |
Gleichenia |
Gleichenia circinidites
|
North America |
Middle Jurassic |
Early Tertiary |
Gleichenia |
Gleichenia circinidites
|
Australia |
Middle Jurassic |
Early Tertiary |
Gleichenia |
Gleichenia communa
|
USSR(Siberia) |
Hauterivian |
Barremian |
Gleichenia |
Gleichenia communa
|
USSR(Moscow) |
Aptian |
|
Gleichenia |
Gleichenia communa
|
USSR(Urals) |
Aptian |
|
Gleichenia |
Gleichenia communa
|
USSR(WSL) |
Aptian |
Turonian |
Gleichenia |
Gleichenia communa
|
USSR(Kazakh SSR) |
Late Cretaceous |
|
Gleichenia |
Gleichenia communa
|
USSR(Siberia) |
Senonian |
Miocene |
Gleichenia |
Gleichenia concavisporites
|
USSR(Russian Platform) |
Late Jurassic |
Oligocene |
Gleichenia |
Gleichenia concavisporites
|
USSR(Ukrainian SSR) |
Late Jurassic |
Oligocene |
Gleichenia |
Gleichenia concavisporites
|
USSR(Kazakh SSR) |
Late Jurassic |
Oligocene |
Gleichenia |
Gleichenia concavisporites
|
USSR(Pre-Urals) |
Aptian |
|