FIGURE 2.  QuickTime animation of a 3-D reconstruction of Caprinuloidea perfecta derived from the CT data. Animation shows specimen rotating and 3-D cutaways revealing internal structures along two orthogonal axes: 1. sections transverse to growth direction and 2. longitudinial view; note ligament groove on shell exterior defining dorsal margin. Body cavity opening is covered by shell debris. (Use keyboard arrows keys to scroll back and forth between frames.)

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