In this article, the remains of a nearly complete specimen of the enigmatic Sanmiguelia Brown pla... more In this article, the remains of a nearly complete specimen of the enigmatic Sanmiguelia Brown plant (narrow stem and attached palm-like leaves) are described from the Early Jurassic (Hettangian) in the uppermost part of the Whitmore Point Member of the Moenave Formation in southwestern Utah. Previously, the fossil was only known from Upper Triassic strata at ten localities found in all but the lowest members of the Chinle Formation of Late Triassic age and equivalent units in the American Southwest. A small isolated fragment of the palm-like leaf of the Sanmiguelia plant is also described here for the first time from the Church Rock Member of the Chinle Formation in Lisbon Valley, southeastern Utah. The twelve localities (counting those described here) extend from west Texas to Zion National Park in southwestern Utah and range in age from Late Triassic (Norian) to Early Jurassic (Hettangian).
In this article, the remains of a nearly complete specimen of the enigmatic Sanmiguelia Brown pla... more In this article, the remains of a nearly complete specimen of the enigmatic Sanmiguelia Brown plant (narrow stem and attached palm-like leaves) are described from the Early Jurassic (Hettangian) in the uppermost part of the Whitmore Point Member of the Moenave Formation in southwestern Utah. Previously, the fossil was only known from Upper Triassic strata at ten localities found in all but the lowest members of the Chinle Formation of Late Triassic age and equivalent units in the American Southwest. A small isolated fragment of the palm-like leaf of the Sanmiguelia plant is also described here for the first time from the Church Rock Member of the Chinle Formation in Lisbon Valley, southeastern Utah. The twelve localities (counting those described here) extend from west Texas to Zion National Park in southwestern Utah and range in age from Late Triassic (Norian) to Early Jurassic (Hettangian).
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