sentences:  Some of the first published representations of fossils were those of fossil plants taken from coal measures near Neath (Gibson late 17th century).In the mid-19th century, two prominent geologists, Roderick Murchison and Adam Sedgwick used their studies of the geology of Wales to establish certain principles of stratigraphy and palaeontology.They did fundamental work on the Old Red Sandstone but are remembered more for their work on the lower Palaeozoic sequence.