The 127 coded characters used in cladistic analyses of genera assigned to families Monticuliporidae and Mesotrypidae. These characters were cladistically informative (i.e., were synapomorphic) having states shared by in-group genera. This is a partial listing of 267 characters developed from the following sources (R. L. Anstey, personal communication): Anstey (1978), Anstey (1990), Anstey and Pachut 1995 (Appendices A and B), Anstey and Perry (1970, 1973), Blake and Snyder (1987), Corneliussen and Perry (1973), Cuffey and Blake (1991), Hageman (1991), Hickey (1988), Key (1990), McKinney (1977, 2000), Pachut and Anstey (1984), Pachut, Anstey, and Horowitz (1994), Prezbindowski and Anstey (1978), Spearing (1998), Tang and Cuffey (1998), and Taylor and Weedon (2000).
Characters that could not be evaluated within a genus were coded using a question mark
