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Agathoxylon

Agathoxylon is a genus of fossil wood similar to the modern Araucariaceae conifers. These ones are intended to be some of the residents of the Petrified Forest in Arizona—home of Coelophysis—called Agathoxylon (or Araucarioxylon) arizonicum. They were massive, straight, and had upwards growing branches that were distributed evenly (as opposed to in verticillations, aka in groups at fixed heights). We don’t know what sort of leaves they would’ve borne, however. Foliage is found fossilised separately, so there’s multiple options.
The trees grew in a seasonally dry environment, but always close to watercourses, with huge taproots anchoring them into the soil.

While reading my source, I was reminded much more of modern Agathis trees than of araucarias, so I decided to make it similar to those. They have broad, parallel-veined leaves (called Podozamites in the fossil record).

Uses the Rustic theme. Separate with box select.

Source: Ash, S.R. and Creber, G.T. (2000), The Late Triassic Araucarioxylon Arizonicum trees of the Petrified Forest National Park, Arizona, USA. Palaeontology, 43: 15-28. https://doi.org/10.1111/1475-4983.00116


Edit: Some other papers and conversations have made me think these are less likely to be accurate, they probably had more Araucaria-like leaves. These can probably still be used in later, wetter environments though.