 Like the Tractatus, the Syncategoreumata also displays a continental origin, and appears to have continued along the lines of a similar work by Johannes Pagus (which has been dated between 1225 and 1235), later on further developed by Nicholas of Paris, who wrote his Syncategoreumata between 1240 and 1250 (see Braakhuis 1979, Vol. I, p. 248).