Genus: Isfjordosaurus MONTANI, 1999
Etymology: Named after Isfjord, Spitsbergen, Svalbard Island, Norway, the locality for the type specimen, and Greek, sauros, “lizard” : Isfjord lizard.

Species: minor (WIMAN, 1910) MONTANI, 1999
Etymology: Greek, minor, "minor or small."
= Pessopteryx minor WIMAN 1910
= Omphalosaurus minor (WIMAN 1910)
Etymology:

Holotype:

Locality: Isfjord, Spitsbergen, Svalbard Island, Norway.

Horizon:

Biostratigraphy:

Age: Late Triassic.

Material: Humerus.