Are these fossils ?

The measurements for the fossil please?

They are a combination of brachiopod fossils and rudist spicules from sponges or corals and "Sole marks". Sole marks are preserved energy features from moving water or drying mud. I think we see some dessication casts (thats a type of sole mark) or else they are cross cutting mini veins of sediment. The linears are slightly different material than the bedrock sopecimen.
As evolutions said, you should put a coin or a small ruler in the picture so we hqve a sense of scale

Were these from Gros Morne or near Argentia??

I just realized he used the small 3-4in carpenter bug in the bottom right corner as his "coin" or "ruler". So the width would be about 3-4 feet. Eyeballing the length, i'd say somewhere at 7 feet. I can see the several Solle Marks, your right on this fossil.