Pathology
The Allosaurus fragilis specimen USNM 8367 contained several gastralia which preserve evidence of healed fractures near their middle. Some of the fractures were poorly healed and "formed pseudoarthroses." An apparent subadult male Allosaurus fragilis was reported by Laws to have extensive pathologies. The possible subadult male A. fragilis specimen MOR 693 also had pathological gastralia. The left scapula and fibula of an Allosaurus fragilis specimen catalogued as USNM 4734 are both pathological, both probably due to healed fractures.
The holoteype of Neovenator salerii had many pathologies, including pseudoarthrotic gastralia and a deviation to the right of the third and fourth neural spines of the neck vertebrae.
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.
Read more about this topic: Gastralium
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—Bronislaw Geremek (b. 1932)