Late Triassic plant megafossils found in Petrified Forest National Park
Compiled by Dr. Sid Ash, September 2003

* species based on fossils collected in the park
** species and genotype based on fossils collected in the park

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 arizonicumBrachyphyllum hegewaldia*
Pagiophyllum simpsonii*
Podozamites arizonicus*
Samaropsis puerca*

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