Salvador Dalí created two separate images sharing the title Morphological Echo. Both were oil on panel paintings. The first was painted circa 1934 to 1936. It was substantially larger than its successor, measuring 25 by 21 inches. This version of the artwork can currently be seen at the Salvador Dali Museum in St. Petersburg, Florida. The second painting with this title was done in 1936. It measured just 12 by 13 inches in size. It too, is in the possession of the Dali museum. While both pieces had the same name, their subject matters were quite different.