Back Araucarioxylon arizonicum Catalan Araucarioxylon arizonicum Spanish آراوکاریوکسیلون آریزونیکوم Persian אראוקריאוקסילון HE Araucarioxylon Icelandic Araucarioxylon arizonicum Portuguese Araucarioxylon arizonicum Turkish Araucarioxylon arizonicum Ukrainian 南洋杉型木 Chinese
| Araucarioxylon arizonicum | |
|---|---|
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| Araucarioxylon arizonicum look reconstruction. | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Araucariales |
| Family: | Araucariaceae |
| Genus: | †Araucarioxylon |
| Species: | †A. arizonicum
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| Binomial name | |
| †Araucarioxylon arizonicum | |
Araucarioxylon arizonicum (alternatively Agathoxylon arizonicum) is an extinct species of conifer that is the state fossil of Arizona.[1] The species is known from massive tree trunks that weather out of the Chinle Formation in desert badlands of northern Arizona and adjacent New Mexico, most notably in the 378.51 square kilometres (93,530 acres) Petrified Forest National Park.[2] There, these trunks are locally so abundant that they have been used as building materials.[3]
- ^ Sidney R. Ash & Geoffrey T. Creber (2000). "The Late Araucarioxylon arizonicum Trees of the Petrified Forest National Park, Arizona, USA". Palaeontology. 43: 22–23. doi:10.1111/1475-4983.00116. S2CID 128691956.
- ^ Sidney R. Ash & Rodney A. Savidge (2004). "The bark of the Late Triassic Araucarioxylon arizonicum tree from Petrified Forest National Park, Arizona" (PDF). IAWA Journal. 25 (3): 349–368. doi:10.1163/22941932-90000371. S2CID 84702754. Archived from the original (PDF) on 4 May 2012.
- ^ Adele Conover (June 1997). "The Object at Hand". Smithsonian.com. Archived from the original on September 21, 2013. Retrieved November 19, 2011.
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