Caimarusa is one of the tunes used in teaching music to children using the Carl Orff method. See "Discovering Orff" by Frazee and Kreuter, published by Schorr. Sources for all music used in the program are listed in the notes. You may find it in your library. Orff Method
Sorry I couldn't find the tune or dance with any details about authorship or provenance, but I think it may have something to do with a crocodile.