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Colinoceras sp.

bone2stone

By bone2stone

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Housing chamber with tube worms.
Solid calcite crystal internal structure.
Colinoceras (Calycoceras Tarrentense)

From the album:

Cephalopods N.Tex

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Photo Information

  • Taken with Canon Canon PowerShot SX120 IS
  • Focal Length 12.8 mm
  • Exposure Time 1/50
  • f Aperture f/3.5
  • ISO Speed 250
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bone2stone

Solid is determined by weight of similar specimens of same size/diameter known to be "hollow" by cut and polish.

Calycoceras tarrentense

(Acanthoceras)

Woodbine formation

Dallas Co. Tex.

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