The data matrix was taken from Clark (2011) analyses of Fruitachampsa. Clark (2011) developed upon character’s taken mostly from Pol and Gasparini (2009) work. Pol and Gasparini (2009) matrix was composed of characters developed from other authors, e.g., Clark (1994). Furthermore, Clark (2011) expanded on Pol and Gasparini (2009) matrix with four additional characters (258–262). This study further expands on this matrix with the addition of 1 character (char. 263) describing the position of the choana relative to the suborbital fenestra, and the connection between choana and palatal fenestra. Also, characters 258 and 200 were amended to include more specific information concerning the palatines contact with other elements, size and sculpturing. Characters 1, 3, 6, 23, 32, 37, 43, 45, 49, 65, 67, 69, 73, 77, 79, 86, 90, 91, 96, 97, 104, 105, 106, 108, 126, 142, 143, 149, 167, 182, 197, 226 were ordered (marked with a “+”).