Richards Spur dissorophids: Appendices

APPENDIX 1.

Comparative measurement table for Cacops morrisi. Measurement abbreviations: ML, maximum length of skull across preserved regions; MW, maximum width across posterior skull table; NI, narrowest interorbital width; Pin, anterior pineal foramen margin to anterior margin of the nuchal ridge; PosO, postorbital length from posterior orbital margin to anterior margin of the nuchal ridge; PreO, preorbital length from premaxilla to anterior orbital margin; RL, skull roof length from anterior tip of premaxilla to nuchal ridge. The width measurements for OMNH 53077, OMNH 73206a, and OMNH 73206c were calculated by mirroring across the midline along the posterior skull region. ^†an underestimate due to limited incomplete exposure or damage. A reference image for how measurements were made is given in Appendix 2.

APPENDIX 2.

Reference figure of OMNH 79338 (Cacops woehri) showing how cranial measurements were taken for Appendix 1 and Appendix 3 (refer to appendices for abbreviations). Note that the narrowest interorbital width (NI) and the maximum width (MW) were doubled for this specimen as it represents only half of the skull.

APPENDIX 3.

Comparative measurement table for Cacops woehri. Measurement abbreviations: Measurement abbreviations: ML, maximum length of skull across preserved regions; MW, maximum width across posterior skull table; NaL, maximum length of nasal; NI, narrowest interorbital width; NL, maximum length of external naris; Pin, anterior pineal foramen margin to nuchal ridge; PosO, postorbital length from posterior orbital margin to nuchal ridge; PreO, preorbital length from premaxilla to anterior orbital margin; RL, skull roof length from anterior tip of premaxilla to nuchal ridge. The width measurements for OMNH 73216 and OMNH Y was calculated by mirroring across the midline. ^†a slight underestimate due to limited incomplete exposure or damage. ^§a slight overestimate due to limited incomplete exposure or damage. A reference image for how measurements were made is given in Appendix 2.

APPENDIX 4.

Isolated right humerus of an indeterminate dissorophid, FMNH UC 1086. 1, Photograph in flexor profile; 2, photograph in anterior profile; 3, photograph in extensor profile; 4, photograph in posterior profile. Scale bar equals 1 cm.