Hyrtanecrinus pentalobus
By crinoid1
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Hyrtanecrinus pentalobus
Lower Bangor Limestone
Upper Mississippian
Colbert Co., AL
Collected 2014
Note the recumbent arms. This is an adaptation that allowed the crinoid to fold its arms over the cup. It helped with filter feeding. In life, the cup would not be exposed, but because of weathering, the top of the cup is visible on this specimen.
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From the album:
Crinoids of Alabama - Lower Bangor Limestone
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Photo Information
- Taken with Canon Canon EOS REBEL T2i
- Focal Length 55 mm
- Exposure Time 1/100
- f Aperture f/6.3
- ISO Speed 100
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