Palmoxylon simperi and Palmoxylon pristina: Two Pre-Cretaceous Angiosperms from Utah

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Science  15 May 1970:
Vol. 168, Issue 3933, pp. 835-840
DOI: 10.1126/science.168.3933.835


Petrified palm stems (Palmoxylon simperi and Palmoxylon pristina) from the Middle Jurassic Arapien Shale Formation near Redmond, Sevier Country, Utah, are the first unequivocal angiosperms reported from pre-Cretaceous strata.

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