Frequencies of immature (dark green), partially mature (light green) and mature (yellow) specimens through time. A. 2 Ma time bin. B. 4.5 Ma bin. C. 6 Ma bin. D. 10 Ma bin. Note that the frequency of immature specimens increases through time independent to the time bin scheme used.

 
 
  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