Description:

**Originally Listed At $200**

North America, Western United States, Wyoming, Green River Formation, Eocene Epoch, ca. 53.5 to 48.5 million years ago. A fossil panel featuring a well-preserved prehistoric fish known as a Knightia, displayed in profile with clear skeletal and fin detail. Set into a mottled gray limestone matrix, the specimen offers a striking example of the exceptional preservation for which the Green River Formation is known. Size of matrix: 12.25" L x 1" W x 9.5" H (31.1 cm x 2.5 cm x 24.1 cm); fish: 5.75" L x 1.5" W (14.6 cm x 3.8 cm)

Provenance: private Colorado, USA collection

All items legal to buy/sell under U.S. Statute covering cultural patrimony Code 2600, CHAPTER 14, and are guaranteed to be as described or your money back.

A Certificate of Authenticity will accompany all winning bids.

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#200557

  • Condition: Some losses to finer details, but fish form is clear and well preserved.

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Shipping

Auction House will ship, at Buyer's expense

May 6, 2026 5:00 PM MDT
Louisville, CO, US

Artemis Fine Arts

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Bid Increments
From: To: Increments:
$0 $299 $25
$300 $999 $50
$1,000 $1,999 $100
$2,000 $4,999 $250
$5,000 $9,999 $500
$10,000 $19,999 $1,000
$20,000 $49,999 $2,500
$50,000 $99,999 $5,000
$100,000 $199,999 $10,000
$200,000 + $20,000