First documentation of a greenstick fracture in the fossil record. Possible gout also noted inArkansaurus fridayii

Examination of a cast of the newly recognised Arkansas state dinosaur, Arkansaurus fridayii, revealed abnormal pedal features. As casts do not always faithfully reproduce bony alterations and often lack sufficient resolution for delineation of fine features, the original pedal elements were obtained and subjected to non-destructive microscopic examination to characterise the nature and identify the derivation of the macroscopically recognised...