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Detailed View - MER-B Sol 049 Object

The original NASA/JPL image link is here

Description:  sand dollars

Apparent size:  3.5 mm

Common features:  flattened shape, patterned surface, notches around perimeter, concave underside, five-fold symmetry (top and bottom views of terrestrial starfish)

 

 

Stacked frames:  4

Enhancement methods:

bright/contrast & difference 

Summary description of image contents:  This is a pair of small sand dollars or creatures very like sand dollars.  They exhibit patterns and markings similar to terrestrial sand dollars and also the same general structural features.  The left image is upright (arboral view) and the right image is the obverse side (oral view).  The oral view shows in the upper right corner what appears to be an ambulacral groove, common to terrestrial sand dollars.  Compare the oral view to this image (right side) of a cut away sand dollar.

    On the left view you can see two notches at 2:00 and 4:00 positions that correspond to the ambulacral grooves.

Stereo view:  click here

Anaglyph view:  click here

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