Lot 134, Auction 3/19/2026: Huge Paleocene Sycamore Fossil Leaf from Montana

$1,820.00

In stock

North America, Western United States, Montana, Fort Union Formation, Paleocene period, ca. 66 to 56 million years ago. A large fossilized leaf attributed to the prehistoric sycamore Macginitiea nobilis (formerly Platanus nobilis), displaying a broad, multi-lobed form with clearly articulated primary and secondary venation. The leaf presents in a rich reddish-brown hue that stands out against the pale cream matrix. The overall symmetry and well-defined lobes are characteristic of Paleocene sycamore leaves from the Fort Union Formation. Specimens of this type date to a period of flourishing temperate forests that spread across western North America following the extinction of the dinosaurs, making this an impressive and decorative example of early Paleocene plant life. Size: 13″ L x 11″ W (33 cm x 27.9 cm); 12″ H (30.5 cm) on included custom stand.

Condition: Professionally prepared, matrix is intact. Leaf has some minor touchups with pigment, but otherwise intact. Nice vein details.

Provenance: private Berthoud, Colorado, USA collection

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