Perna-Shell of Albena, Bulgaria?

[Herner]

Hi,

I found this shell on the beach of albena.

they are certainly very heavily worn.

Possibly Perna or heavily eroded shells of Crassostrea gigas?

Size: 39,5 x 12,5 x 4,4 mm

I also found there are similarly shaped shells, but they were light brown or white.

Greetings Herner

[img width=640 height=437]http://matzlpage.de/data/media/2240/08d.jpg[/img]

...and here are more individuals of the same species:

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