Crassostraea fossil or trigonia

[Jaime]

Hi guys,

 

I bought this fossil in a fossil store as trigonia, seems to me More líke a crassostraea fossil or oyster fossil. I bought It at baja California, México.

 

If More angles are needed let me know.

 

Could anyone advice please Where can i look for fossil species of this kind to know the species?

 

Thank You!

[Ludwigia]

I agree with your assessment that it's some kind of oyster. Definitely not a Trigonia at any rate.