''Collilongus'' (meaning "long neck") is an extinct

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of small

archosauriform Archosauriformes (Greek for 'ruling lizards', and Latin for 'form') is a clade of diapsid reptiles encompassing archosaurs and some of their close relatives. It was defined by Jacques Gauthier (1994) as the clade stemming from the last common anc ...

, possibly a

rauisuchia "Rauisuchia" is a paraphyletic group of mostly large and carnivorous Triassic archosaurs. Rauisuchians are a category of archosaurs within a larger group called Pseudosuchia, which encompasses all archosaurs more closely related to crocodilians ...

n, known from

Early Triassic The Early Triassic is the first of three epochs of the Triassic Period of the geologic timescale. It spans the time between 251.9 Ma and Ma (million years ago). Rocks from this epoch are collectively known as the Lower Triassic Series, which ...

(

Olenekian In the geologic timescale, the Olenekian is an age (geology), age in the Early Triassic epoch (geology), epoch; in chronostratigraphy, it is a stage (stratigraphy), stage in the Lower Triassic series (stratigraphy), series. It spans the time betw ...

age) rocks of Czatkowice 1,

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...

. It was first named by Magdalena Borsuk−Białynicka; and Andriej G. Sennikov in 2009. The type and only known species is ''Collilongus rarus''. It is a rare component of the Czatkowice 1 fauna, known only from vertebrae. ''Collilongus'' was a contemporary of the more common archosauriform ''

Osmolskina left, 210px, Fossil elements. ''Osmolskina'' is a genus of archosauriform reptile which lived during the Early Triassic in what is now Poland. The type species, ''Osmolskina czatkowicensis'', was described by Magdalena Borsuk−Białynicka and ...

''.

References

Early Triassic reptiles of Europe Archosauriformes Fossil taxa described in 2009 Fossils of Poland Prehistoric reptile genera {{triassic-reptile-stub