Description:

**Originally Listed At $200**

Ancient Seas, North America, South Dakota, Pierre Formation, Late Cretaceous Period, ca. 83.6 to 72.1 million years ago. This is a stunning fossilized shell from the cephalopod Baculite compressus, with a straight, columnar structure. The exterior has developed rainbow iridescence from the shell's nacre surface (mother of pearl). Baculite, also known as "walking stick rock," is a heteromorph ammonite with a straight rather than spiraling shell. This piece is a fragment of larger shell that housed and protected the soft tissue of the baculite creature. The internal structure is visible on both ends and provides a unique look into the chamber that has been filled in with stone during the fossilization process. Size: 4.25" L x 2" W (10.8 cm x 5.1 cm)

Provenance: ex-Anchorage, Alaska, USA collection

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#166733

  • Condition: Fragment of a larger shell. Cracking and active flaking of opalized surface. We recommend using a display case or fixative coating to protect the surface. Inventory label on surface is worn and tearing.

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September 17, 2022 9:00 AM 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