Pleuromya ? (Jurassic bivalve)

[Quer]

Hi,

 

I have found this piece in a well-known jurassic site where brachs abound (Late Pliensbachian/early Toarcian, Tenuicostatum biozone, Iberian-Pyrennes basin)

 

 

 

My guess is genus Pleuromya. At species level, Pleuromya rotundata is mentioned in the zone, but I find nothing about it (I fear of an invalid or junior species). It looks like Pleuromya uniformis, of whitch @Ludwigia and @nala have posted some pictures.

 

 

[Ludwigia]

I think you could be right, since it is recorded in the Spanish Toarcian, although Pleuromya costata is another possibility.