Complex sentence: His "Morphology of the Folk Tale" was published in Russian in 1928; although it represented a breakthrough in both folkloristics and morphology and influenced Claude Lévi-Strauss and Roland Barthes, it was generally unnoticed in the West until it was translated in the 1950s.
Split into simpler sentences: His "Morphology of the Folk Tale" was published in Russian in 1928. Although it represented a breakthrough in both folkloristics and morphology and influenced Claude Lévi-Strauss and Roland Barthes, it was generally unnoticed in the West until it was translated in the 1950s.