This Piece found in Grand Falls NB by Carol Cyr shows the same swan motif as shown in my previous post of a find from my site here in the UK. Both could also show the elephant head and front leg motif, if rotated 90 degrees counter clockwise whilst covering the 'head' of the 'swan'.
Carol an artist has been collecting Portable Rock Art for 10 years, and has amassed a large collection. The fact that matching motifs can be found in places all over the world points to a common unknown culture way back in Earths history. More of Carols collection can be seen at the Rock Art Museum.