No, not at that time. The collision with Africa which led to the formation of the supercontinent of Pangea (also spelled 'Pangaea') didn't come until about 250 million years ago. The formations which contained the fossils are about 380 million years old.
One of my more awed touring experiences occurs twice-annually on the Interstates through New York and Pennsylvania. What massive shiftings of earth, water, pressure and fire are written in those sections of rock!
I appreciate very much your very complete response; however, am I not correct in saying that a long chunk of Africa remains stuck within the boundaries of North America to this day?
Perhaps what I should have written was:
...the fossils were among the first animals to live on land in North America which was originally a piece of Africa within the boundaries of North America..."
(If that is indeed true).
