No. 13 – Overall smaller, m3.3 was shorter and the unguals were sharper.
Aurorazhdarcho – The metacarpus was nearly twice as long and metacarpals 1-3 were more gracile. Manual 1.1 was half as long. Manual 3.2 was nearly the length of m3.3. The unguals were smaller.
Eoazhdarcho – Metacarpals 1-3did not reach the carpus. The digits were longer. The unguals were smaller.
Eopteranodon – Manual 2.2 was longer and m3.1 was shorter. The unguals were larger.
Muzquizopteryx – Compare to the outgroup taxon No. 13. The metacarpus was longer, though not as long as in the eopteranodontids. Metacarpals 1-3 did not reach the carpus. The proximal phalanges were longer. The unguals were shorter.
Nyctosaurus FMNH 25026 – Metacarpal 4 was longer. The digits were less than half the size.
Nyctosaurus FHSM VP 21 – Distal metacarpal 4 was reduced. The digits were smaller and more gracile.
Nyctosaurus UNSM 93000 – The digits were mere threads.
Nyctosaurus KJ1 – No digits are known.
Pteranodon YPM 1175 – The digits were smaller. The unguals were shorter.
Pteranodon (Ptweety the immature private specimen) – The fingers and their unguals were much larger, as in the JZMP embryo (above), but not in the Pterodaustro or IVPP embryos.
Pteranodon NMC41-358 – Compared to outgroup FMNH 25026. The metatarsus and digits were more gracile. The unguals were more deeply hooked. Manual 2.2 was longer relative to m2.1.
Pteranodon UALVP 24238 – The metacarpus was more robust. The digits were smaller.