Komentáře k obrázku
Připomínka byla vyřešenaYou are right. ( This is S. woodiana ). Today I asked for a precise determination of one of the leading Czech experts on bivalve molluscs. Again verified by peaks, although the shape is not completely typical shells.
So I took specimens from the collections and he measured their dimensions. I still think that this is a kind of Pseudanodonta complanata. And for the following reasons:
The tops of scallops are not significant (compared to S. woodiana). The shield is low, has a blunt rounded tip, the label is not significantly developed the outline of shells is not so round and staining corresponds rather well of P. complanata. Conch definitely not in the inside pink.
In conclusion, I attach dimensions (three) shells.
Length: 94/84/86 mm
Height: 60/54/58 mm
width: 34/29/29 mm
Wall thickness of the shell: about 1 mm
However, I would like to see some more determination certified expert!
The tops of scallops are not significant (compared to S. woodiana). The shield is low, has a blunt rounded tip, the label is not significantly developed the outline of shells is not so round and staining corresponds rather well of P. complanata. Conch definitely not in the inside pink.
In conclusion, I attach dimensions (three) shells.
Length: 94/84/86 mm
Height: 60/54/58 mm
width: 34/29/29 mm
Wall thickness of the shell: about 1 mm
However, I would like to see some more determination certified expert!
This animal is looks like Sinanodonta woodiana (LEA 1834) (Chinese pond mussle). Formerly was named as Anodonta woodiana (LEA, 1834).
It is not Pseudanodonta, but it is difficult to tell if it is Anodonta anatina (most probably) or A. cygnea.