Unidentified shell from Indian Ocean

[tjearly]

Struggling to identify this shell my Dad found in the waters off Oman. Any ideas?


<img src="http://img692.imageshack.us/img692/3714/shell1.jpg" alt="http://img692.imageshack.us/img692/3714/shell1.jpg" style="border:0" />
<img src="http://img233.imageshack.us/img233/2236/shell2o.jpg" alt="http://img233.imageshack.us/img233/2236/shell2o.jpg" style="border:0" />
<img src="http://img233.imageshack.us/img233/2662/shell3.jpg" alt="http://img233.imageshack.us/img233/2662/shell3.jpg" style="border:0" />
<img src="http://img233.imageshack.us/img233/6115/shell4.jpg" alt="http://img233.imageshack.us/img233/6115/shell4.jpg" style="border:0" />

[paul monfils]

This is Tutufa bardeyi, an uncommon member of the family Bursidae, found only in the northern Indian Ocean, usually from Oman to Somalia.  It is also the largest species of Bursidae.

[tjearly]

Thanks!