According to fraternity history books, the University of Illinois chapter claims to be the first chapter of the new fraternity, by an attempt to set the meeting during a time in which Illinois was off on break, and Michigan's chapter would still be in classes, leading to the Anthemios chapter being the first chapter of the fraternity. Iktinos (Michigan) instead claims the first chapter out of pure virtue of their precursor organization existing before the one at Illinois. Both the Iktinos and Anthemios chapters are considered the founding chapters, and as such, share the same cadency mark.