Petrified Forest National Park - Plant Megafossils

Petrified Forest by US-Parks

Late Triassic plant megafossils found in Petrified Forest National Park.

Compiled by Dr. Sid Ash, September 2003.

Lycopods

Chinlea campii** Chinlea sp.

Horsetails

Equisetites bradyi* Equisetites spp. Equicalastrobus chinleana** Neocalamites virginiensis Neocalamites sp.

Ferns and Fernlike Foliage

Cladophlebis daughertyi* C. yazzia* Cladophlebis spp. Clathropteris walkeri* Cynepteris lasiophora* Itopsidema vancleaveii** Phlebopteris smithii* Sphenopteris arizonica* Todites fragilis* Wingatea plumosa**

Cycads

Aricycas paulae** Charmorgia dijolli** Lyssoxylon grigsbyi**

Cycadeoids

Zamites powellii

Ginkgoes

Baiera arizonica*

Cordaites

Dadoxylon chaneyi*

Conifers

Araucariorhiza joae** Araucarioxylon arizonicum Brachyphyllum hegewaldia* Pagiophyllum simpsonii* Podozamites arizonicus* Samaropsis puerca*

Position Uncertain

Carpolithus chinleana* Dinophyton spinosus** Marcouia neuropteroides** Pramelreuthia yazzi* Schilderia adamanica** Woodworthia arizonica**