Paleontica Community

I need your help on this one
I recently visited a local dolomite quarry
In the surrounding area limestone and dolomite can be find, with remains of innevertebrates - corrals, burrows etc. and according to literature the age of this layers is Anisian (Triassic)
In the picture is one of my finds, something that I identify as algal stromatolite, but i am not sure
Can anybody confirm or infirm my find?

Thank you

Tommy