A multi-specimen tyrannosaurid histology dataset combines growth marks with estimated age and body mass to fit comparative growth curves.
Represented range83–66 Ma
RegionsNorth American tyrannosaurid specimen series
CladesTyrannosauridae · Tyrannosaurus
Claim ledger
event-mechanism · medium
Growth marks in a catalogued tyrannosaurid specimen series including FMNH PR 2081 provide histological observations; ages, asymptotic masses and a peak Tyrannosaurus growth rate near 2.1 kilograms per day are fitted estimates conditional on missing marks and body-mass equations.