NPS/MARGE POST
Petrified wood may not have bark, limbs, roots, or leaves, but it often has distinctive characteristics that help scientists identify it.
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 arizonicum
Brachyphyllum hegewaldia*
Pagiophyllum simpsonii*
Podozamites arizonicus*
Samaropsis puerca*
Position Uncertain
Carpolithus chinleana*
Dinophyton spinosus**
Marcouia neuropteroides**
Pramelreuthia yazzi*
Schilderia adamanica**
Woodworthia arizonica**
