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Bulbous holdfasts of crinoids


SheLovesFossils

The scyphocrinus were floating crinoids and their holdfast was actually an air bladder that supported multiple stems and calyx. 

From the album:

Fossils from Arisaig Nova Scotia

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Photo Information

  • Taken with Apple iPhone 5
  • Focal Length 4.1 mm
  • Exposure Time 1/40
  • f Aperture f/2.4
  • ISO Speed 50

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