1994. This report speculated that cervical vertebrae from Cryolophosaurus found nearby were also from the sauropodomorph, but this has since been disproven. The fossils were described by the paleontologists Nathan Smith and Diego Pol, who named the new genus and species Glacialisaurus hammeri, with FMNH PR1823 as holotype specimen. The generic name is derived from the Latin root glacialis meaning “icy” after its discovery in the Beardmore Glacier region in the Central Transantarctic Mountains and the word sauros meaning “lizard”. The specific name honors Hammer for his contributions to Antarctic paleontology. Description While few remains are known of Glacialisaurus, its leg bones show it was a robust basal (early diverging or "primitive") sauropodomorph. The femur fragment is the larger of the two known specimens, measuring as preserved, with an estimated total length when intact of . Glacialisaurus is estimated to have been about long. As a basal sauropodomorph, Glacialisaurus would have had a long neck and a proportionally small head with leaf-shaped teeth. The hand would have been short, wide, and robust with a large claw on the thumb. Leg bones The cross-section of the robust femoral shaft is slightly wider from side to side than from front to back, though not as extreme as in eusauropods. The medial epicondylar crest extends from the medial surface of the lower femoral shaft and is distinct from all other sauropodomorphs in that it is robust, a trait convergently evolved in basal theropods. The front surface of the femur is flat instead of convex from side to side, a feature shared with other basal sauropodomorphs. The top surface of the upper femur lacks any anterior extensor groove. At the lower end, the lateral and medial condyles are separated by a craniocaudal groove that ends abruptly with a popliteal fossa (opening in the bone). Glacialisaurus is also distinguished by its robust adductor ridge extending from the upper end of the femoral medial condyle. This ridge starts at the end of the medial condyle and is kidney-shaped with a long axis spanning proximolateral−distomedially. The astragalus is low and elongate from across side to side and the medial portion lacks the craniocaudally broadening compared to the lateral portion, a trait found in most non-eusauropods. The astragalus is weakly convex at the lower end, though this is not as extreme as in Blikanasaurus and Lessemsaurus. The upper surface of the astragalus is softly convex because it is