Is this a stromatolite/oncolites rock?

[Rific]

Is anyone familiar with stromatolite/oncolite fossils? I've been researching some of the rocks I've found and this one seems to best fit a strom/on fossil. The pictures look almost identical at times. The pictures arent the best and this is only a partial fossil. The bigger ones are dome formed and have thicker layers of a basalt/limestone type of matrix. Sorry for the bad pics, just wanted to get as many as possible up in case someone spots something in any part of the picture.