Petrified Forest National Park Plant Megafossils

Late Triassic plant megafossils found in Petrified Forest National Park.

Compiled by Dr. Sid Ash, September 2003.


Chinlea campii** Chinlea sp.


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**


Aricycas paulae Charmorgia dijolli Lyssoxylon grigsbyi**


Zamites powellii


Baiera arizonica*


Dadoxylon chaneyi*


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

The Black Diamond Mega Light's SilNylon construction and simple design allow it to shelter four backpackers while...
Price subject to change | Available through
Featured Park
Rising above a scene rich with extraordinary wildlife, pristine lakes, and alpine terrain, the Teton Range stands monument to the people who fought to protect it. These are mountains of the imagination. Mountains that led to the creation of Grand Teton National Park where you can explore over two hundred miles of trails, float the Snake River or enjoy the serenity of this remarkable place.
Featured Wildlife
The pika is a close relative of the rabbits and hares, with two upper incisors on each side of the jaw, one behind the other. Being rock-gray in color, pikas are seldom seen until their shrill, metallic call reveals their presence.