Eudimorphodon? MCSNB 8950 (Wild 1993 - The Bergamo specimen) Norian, Late Triassic, ~205 mya was previously considered a juvenile Eudimorphodon based partly on the truncated shape of the deltopectoral crest and the shape of the sternal complex. MCSNB 8950 was half the size of Peteinosaurus. Here MCSNB 8950 was derived from a sister to Carniadactylus and phylogenetically preceded the IVPP embryo. The skull is missing.
Distinct from Carniadactylus, the sternal complex was smaller, with short lateral processes and a round posterior. As in other primitive pterosaurs, the components of the sternal complex were not completely fused. The humerus was more gracile and the deltopectoral crest was wider. Metacarpals II-IV were subequal.
Atypical for this clade, the ventral pelvis appears to be split between the wider pubis and the narrower ischium. The femoral head was inturned nearly 90 degrees.The hind limbs were considerably shorter. Pedal proportions were similar to Carniadactylus and Peteinosaurus (figure 11a). The unguals were smaller. |
