Named By: M. Borsuk−Białynicka & A. G. Sennikov - 2009.
Classification: Chordata, Reptilia, Diapsida, Archosauromorpha, Archosauriformes.
Species: C. rarus (type).
Known locations: Poland.
Time period: Olenekian of the Triassic.
Fossil representation: Vertebrae.
Collilongus is a genus of archosauriform that lived in Poland during the Triassic. Little is known about Collilongus because so far the genus is only known from teeth.
- Archosauriform postcranial remains from the Early Triassic karst deposits of southern Poland. Palaeontologia Polonica 65:283-328. - M. Borsuk−Białynicka & A. G. Sennikov - 2009.