Help with shell id in Indonesian Meg matrix

[mr.cheese]

Hi just wondering what this shell might be that is in the matrix of my Indonesian (Java) Meg tooth. @IsaacTheFossilManmight have an idea?

[IsaacTheFossilMan]

Would you be able to attach a photo of the beak, and of the commisure - and perhaps a side-profile?

Views as shown:

 

[IsaacTheFossilMan]

As we don't have more precise locality info, I'm working off of Badjang Formation, Early Pliocene Period, Jawa Barat Province, Bandung, West Java, Indonesia until further information!

[IsaacTheFossilMan]

It bears reminiscence to Scapharca hulshofi, I'm trying to see evidence of the ears typical of similar bivalves, but I'm unsure if either these are buried, or not present.

See:

[mr.cheese]

50 minutes ago, IsaacTheFossilMan said:

It bears reminiscence to Scapharca hulshofi, I'm trying to see evidence of the ears typical of similar bivalves, but I'm unsure if either these are buried, or not present.

See:

Sorry busy at work and juggling other stuff not had a chance yet! I have just had a little dig into the matrix though (it is very soft!) and there doesn't seem to be any ears.

[IsaacTheFossilMan]

8 minutes ago, mr.cheese said:

Sorry busy at work and juggling other stuff not had a chance yet! I have just had a little dig into the matrix though (it is very soft!) and there doesn't seem to be any ears.

Interesting! Could you post photos in the aforementioned orientations?

[mr.cheese]

There you go, last one is after a bit of matrix removal

[IsaacTheFossilMan]

Would you be able to post that last photo again but with better lighting down the beak?

 

[IsaacTheFossilMan]

Do you have any further stratigraphic knowledge about this piece?

[mr.cheese]

I am afraid I have no more than Java. 

Thank you for your patience with this!

[JohnJ]

Size?

 

It's possible @MikeR could have an idea.

[IsaacTheFossilMan]

I would say this is more likely a bivalve, given the lopsided nature of its morphology, but which one is the question? A lot are known from Jawa Barat region.

 

Cardita planicosta(?)

 

 

[MikeR]

4 hours ago, JohnJ said:

Size?

 

It's possible @MikeR could have an idea.

It will be impossible to identify without seeing the internal hinge.  Externally it looks to be either Glycymerididae (taxodont dentition) or Carditidae (heterodont dentition).

[IsaacTheFossilMan]

2 minutes ago, MikeR said:

It will be impossible to identify without seeing the internal hinge.  Externally it looks to be either Glycymerididae (taxodont dentition) or Carditidae (heterodont dentition).

 

I was personally leaning on Carditidae given the overall silhouette of the fossil, but I agree with the wary ID tag.

[mr.cheese]

Just a quick to say thank you for the time you two I shall label it as could be either of these two.

On 7/19/2022 at 9:37 PM, MikeR said:

It will be impossible to identify without seeing the internal hinge.  Externally it looks to be either Glycymerididae (taxodont dentition) or Carditidae (heterodont dentition).

 

On 7/19/2022 at 9:40 PM, IsaacTheFossilMan said:

 

I was personally leaning on Carditidae given the overall silhouette of the fossil, but I agree with the wary ID tag.

 

[IsaacTheFossilMan]

4 hours ago, mr.cheese said:

Just a quick to say thank you for the time you two I shall label it as could be either of these two.

 

 

 

No worries, my friend! That's what we're all here for, as friends and a community.