Lot 161

Three Polished Devonian Orthoceras Fossil Stone Matrices

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Three Polished Devonian Orthoceras Fossil Stone Matrices

Estimate: $400 - $600

Starting Bid: $175

(0 Bids)

by Artemis Fine Arts
June 25, 2026 9:00 AM MDT (In Progress)
Live Auction
686 S. Taylor Avenue
Suite 108
Louisville, CO, US 80027

Ancient Seas, Morocco, Devonian Period, ca. 419.2 to 358.9 million years ago. A group of three polished limestone matrix panels, each densely embedded with the elongated conical shells of Orthoceras, an extinct straight-shelled nautiloid cephalopod that dominated the ancient seas of the Devonian period, their lustrous black interiors and chambered suture lines resolved in vivid relief against the pale gray host stone by skilled cutting and high polish. Size of largest: 7" W x 11.8" H (17.8 cm W x 30.0 cm H)

Provenance: private West Covina, California, USA collection

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Item # 202687

  • Condition: Very Good. Professionally prepared and polished. Some nicks and abrasions to the raised polished areas, but otherwise intact and very good.

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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