Pteroactylus? micronyx? BSp 1968 XV 132 (undescribed) ~15 cm skull length, Late Jurassic ~150 mya, was considered a Pterodactylus micronyx. Here BSp 1968 XV 132 was derived from a sister to Yixianopterus and phylogenetically preceded B St 1936 I 50 (no. 30 in the Wellnhofer 1970 catalog).
Distinct from Yixianopterus, the skull of BSp 1968 XV 132 was longer and lower with more and smaller teeth. The mandible was similarly gracile.
The cervicals were longer with tall neural spines. The torso was relatively smaller and shallower.
The pectoral girdle was smaller. The humerus was longer and the entire wing was more gracile. Manual 4.1 extended only to the mid ulna. Fingers I-III were even smaller.
The ilium was more gracile with a greatly reduced posterior process. The tibia was longer and more gracile. The pes was relatively smaller.
See the pterosaur family tree here. |
