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.
WMSDB - Worldwide Mollusc Species DataBase
PHOLADIDAE
Genus
: Opertochasma (Cragin 1905) â
Opertochasma maloneana
(Cragin 1905) †
Genus
: Xylophagella (Stanton 1901) â
Xylophagella dubius
(Stanton 1901) †
Genus
: Zirlona (H.H. Suter, 1917 â )
Zirlona concentrica
(H.H. Suter, 1917 †)
Genus
: Triomphalia G.B. II Sowerby, 1849
Triomphalia globosa
G.B. II Sowerby, 1849
Genus
: Navea G.W. Tryon, 1865
Navea newcombii
G.W. Tryon, 1865
Navea subglobosa
J.E. Gray, 1851
Navea subglobosa
T. Hamada & T.A. Okutani, 1967