Devonian bivalve

[Rockwood]

Found in Maine glacial drift. Most likely Pragian - Emsian aged. 

Bivalve ?

Anything distinctive enough to say more ?

[Rockwood]

Any chance it could be Thyasira ? The bivalve with a long foot thought have been used for pumping hydrogen sulfide to it's symbionts.

[He asks almost as if he had found the associated trace.] 

[Max-fossils]

Fantastic shell!

 

Sorry to only bring a destructive ID, but it won't be a Thyasira. This genus only appeared in the Cretaceous, so too young for Devonian sediments. 

 

[abyssunder]

I'm thinking of a Palaeoneilo sp. .

[Rockwood]

24 minutes ago, abyssunder said:

I'm thinking of a Palaeoneilo sp. .

I don't see it on the lists of known finds in the most likely formations, but it could be (?) that they have never been found in close enough association with a formation to be listed. Rocks are seldom exposed well enough for extensive collection from them. 

[abyssunder]

You probably know it better than me, but it is listed in this virtual tour of fossils in Maine. There are also others. I can't see through the covering sediment.

[Rockwood]

1 hour ago, abyssunder said:

I'm thinking of a Palaeoneilo sp. .

I found a plate  (USGS 1916) showing fossils from the Chapman sandstone, Devonian, northern Maine. Paleoneilo mainensis looks very similar. They appear to show a similar diagenetic deformation as well.

[abyssunder]

[Max-fossils]

@abyssunder great ID, well done sir