Rekonstrukcja szkieletu Pamelina polonica.

Rekonstrukcja czaszki w widoku od góry i z boku.

Diagnoza

Pamelina differs from other kuehneosaurids in lacking teeth on the parasphenoid, in having more gracile ribs, vertebrae with short narrow tubular transverse processes  and only limited buttressing on the vertebral body. From the British kuehneosaurids it differs in lacking three-headed ribs on anterior vertebrae. 

Porównanie

Pamelina is the earliest representative of the specialised kuehneosaurids, predating known British and American taxa by nearly 40 million years. Although the skull is closely similar to those of the Late Triassic genera, Pamelina is postcranially less specialised. Long expanded transverse processes, deep anterior gliding ribs, and strongly buttressed dorsal vertebrae characterise a Late Triassic kuehneosaur clade of which Pamelina is almost certainly the primitive sister taxon. Although Pamelina shows only a partial development of the unique postcranial morphology of the Late Triassic kuehneosaurids, its skull already shares most of the derived characters of the groups (e.g., confluent nares, loss of the parietal foramen, reduced squamosal, relatively large quadrate, loss of the supratemporal). Pamelina demonstrates that major features of the distinctive kuehneosaurid cranial morphology evolved before the development of the specialised postcranium.

Autekologia

Terrestrial, primitive glider, probably carnivorous (insectivorous).

Występowanie geograficzne

Only locus typicus.

Zasięg czasowy

Only stratum typicum.

Materiały muzealne

Institute of Paleobiology PAN, Warsaw (ZPAL)

Literatura

Evans, S.E. 2009. An early kuehneosaurid reptile (Reptilia: Diapsida) from the Early Triassic of Poland. Palaeontologia Polonica 65, 145–178.