What is the star system?
The star system calculates the number of pieces that were handled by Conchology, Inc. in the last 21 years:
| 0 – 5 pieces | 6 stars |
|
| 6 – 10 pieces | 5 stars |
|
| 11 - 25 pieces | 4 stars | |
| 26 - 75 pieces | 3 stars | |
| 76 - 150 pieces | 2 stars | |
| > 150 pieces | 1 star | |
We want to point out that the star system is only very reliable for PHILIPPINE shells only, as we handle very few foreign shells in general. As time goes, the system will become more and more performant.
Shellers From the Past and the Present
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Aardt, Willem (Willie) Johannes van
Biography of W. Aardt
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Physiology of the Lymnaea (1968) - Edit
Books and Publications by W. Aardt
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1968. Aardt W.J., W.J.van Aardt Quantitative aspects of the waterbalance in Lymnaea stagnalis (L.) Neth. J. Zool., 18 (1968), pp. 253-312. Source - Edit
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2007. Van Aardt, Willie J. & Sophia S.J. Steytler. Shell Permeability and Desiccation Physiology of the Freshwater Snail Bulinus (Bulinus) tropicus (Krauss). Malacologia 49(2): 339-350. Source - Edit
Named after W. Aardt
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Note from Tom Rice: genera used on this page are from the original discription where possible, no genera will be updated to the latest WORMS info,
as this would be an impossible task at hand. Thank you for your understanding.
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