Evolution of paedomorphism through geological time in Plesiosauria, as expressed by the I/(M+P) ratio. Geological time in Ma is represented in the abscissa and I/(M+P) in the ordinate. A. Best linear model. B. Best nonlinear model. C. Best nonparametric model.

 
 
  Part of: Araújo R, Smith AS (2023) Recognising and quantifying the evolution of skeletal paedomorphosis in Plesiosauria. Fossil Record 26(1): 85-101. https://doi.org/10.3897/fr.26.97686