Rekonstrukcja szkieletu Czatkowiella harae.

Rekonstrukcja czaszki w rzucie od góry, od dołu i z boku.

Diagnoza

Czatkowiella differs from all described prolacertilians in having three-headed ribs on some anterior trunk vertebrae, but differs from kuehneosaurs in that these ribs do not attach to the ends of elongated transverse processes. Resembles the Late Permian Protorosaurus in combining long cervical vertebrae and slender horizontal cervical ribs with a primitive premaxilla lacking a posterolateral process, but differs in having a biradiate postorbital bone, paired parietals without a median crest, and cervical vertebrae that are proportionally longer in relation to their height, in the possession of some three-headed ribs, in having short dorsal vertebrae with a greater development of a spine table, and in lacking the bifid caudal neural spines.

Porównanie

The similarities found between the cervical vertebrae and ribs of Protorosaurus and the prolacertids probably represent the retention of primitive character states, possibly synapomorphic for Archosauromorpha.

Autekologia

Terrestrial, probably carnivorous.

Występowanie geograficzne

Only locus typicus.

Zasięg czasowy

Only stratum typicum.

Materiały muzealne

Institute of Paleobiology PAN, Warsaw (ZPAL)

Literatura

Borsuk-Białynicka, M. and Evans, S.E. 2009. A long-necked archosauromorph from the Early Triassic of Poland. Palaeontologia Polonica 65, 203–234.