Petrified Forest Chinle Formation (Triassic of the United States)

Where: Petrified Forest National Park County, Arizona (34.0° N, 109.0° W: paleocoordinates 9.6° N, 47.8° W)

• coordinate based on nearby landmark

When: Petrified Forest Member (Chinle Formation), Norian (228.0 - 208.5 Ma)

Environment/lithology: terrestrial; lithified, carbonaceous sandstone

Size class: macrofossils

Preservation: mold/impression, adpression

Collection methods: surface (in situ), hydrochloric, hydroflouric,

• Petrified Forest National Park (PEFO) Collection

Primary reference: S. R. Ash. 1991. A New Pinnate Cycad Leaf from the Upper Triassic Chinle Formation of Arizona. Botanical Gazette 152(1):123-131 [N. Nagalingum/N. Nagalingum]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 96705: authorized by Nathalie Nagalingum, entered by Nathalie Nagalingum on 28.06.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Cycadopsida
 Cycadales -
Aricycas paulae Ash 1991 cycads