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
42
TRACHYCERATIDAE
Taxon Tree:
CEPHALOPODA [Class]
AMMONOIDEA [Subclass]
CERATITIDA [Order]
TRACHYCERATOIDEA [SuperFamily]
TRACHYCERATIDAE [Family]
[Genus]
[Species]
Genus
: Boreotrachyceras (Bychkov, 1973 â )
Genus species
:
Boreotrachyceras omkutchanicum
Author
:
(Bychkov, 1973 †)
Locality
:
Russia, Maga Buryatdan, Severo-Evenskiy rayon
Size
:
no data
ID
:
6598000048
Genus
: Brotheotrachyceras (Münster, 1834 â )
Genus species
:
Brotheotrachyceras brotheus
Author
:
(Münster, 1834 †)
Locality
:
Italy, Trentino-Alto Adige, Bolzano
Size
:
no data
ID
:
6598000049
Genus species
:
Brotheotrachyceras difforme
Author
:
(Münster, 1834 †)
Locality
:
Italy, Trentino-Alto Adige, Bolzano
Size
:
no data
ID
:
6598000049