An immature dromaeosaurid specimen (which hadn't been described in the scientific literature as of 2001) from Tugrugeen Shireh was observed to have a "bifurcated" gastralium. In the "Gorgosaurus libratus" holotype (NMC 2120) the 13th and 14th gastralia have healed fractures. Another "G. libratus" specimen catalogued as TMP94.12.602 bears multiple pathologies, including a pseudoarthortic gastralium. The unidentified tyrannosaurid specimen TMP97.12.229 had a fractured and healed gastralium.