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
4
TETRATHECIDAE
Taxon Tree:
HYOLITHA [Class]
[Subclass]
ORTHOTHECIDA [Order]
TETRATHECIDAE [Family]
[Genus]
[Species]
Genus
: Holmitheca A.V. Sysoev, 1968 â
Genus species
:
Holmitheca obvia
Author
:
A.V. Sysoev, 1968 †
Locality
:
Russia, Yakutia
Size
:
no data
ID
:
2042000012
Genus species
:
Holmitheca ulterior
Author
:
A.V. Sysoev, 1968 †
Locality
:
Russia, Yakutia
Size
:
no data
ID
:
2042000012
Genus species
:
Holmitheca zhuravlevae
Author
:
A.V. Sysoev, 1968 †
Locality
:
Russia, Yakutia
Size
:
no data
ID
:
2042000012
Genus
: Tetratheca A.V. Sysoev, 1960 â
Genus species
:
Tetratheca clinisepta
Author
:
A.V. Sysoev, 1960 †
Locality
:
Russia, Sakha, Bulunskiy rayon
Size
:
no data
ID
:
238000002
Genus species
:
Tetratheca composita
Author
:
Meshkova, 1974 †
Locality
:
Russia, Yakutia
Size
:
no data
ID
:
238000002
Genus species
:
Tetratheca pentagona
Author
:
A.V. Sysoev, 1968 †
Locality
:
Russia, Yakutia
Size
:
no data
ID
:
238000002