Pteridospermopsida
class Pteridospermopsida
family Bennettitaceae
Bennettitaceae
Bennettitales
order Bennettitales
genus Lyginopteris
Lyginopteris
genus Pecopteris
coal plant
Gzhelian
Serpukhovian
Lepidodendrales
Visean
Kasimovian
Moscovian
Bashkirian
order Lepidodendrales
Coniferophytina
Coniferophyta
subdivision Coniferophytina
Coniferopsida
class Coniferopsida
temnospondyl
family Cordaitaceae
Cordaitaceae
aneurophytalean
nummulite
palaeodendrology
paleodendrology
fossiliferously
ecophylogenetic
Psilophytales
order Psilophytales
Psilophytaceae
family Psilophytaceae
genus Geoglossum
paleobotany
Geoglossum
anteosaur
palaeobotany
Drumian
bidentalian
Jiangshanian
Paibian
family Titanosauridae
Fortunian
Palaeophytic
neornithischian
Guzhangian