Science Advances

Supplementary Materials

The PDF file includes:

  • Fig. S1. Confirming our probability model results (Fig. 3) with simulations.
  • Fig. S2. Same analysis as in Fig. 3 but assuming hominin temporal durations of 2 Ma, A.L. 666-1 (2.33 Ma old) represents the oldest Homo fossil, or both.
  • Fig. S3. Uniform probability plots for 4- to 1-Ma-old hominin fossil horizons in South Africa and eastern Africa.
  • Fig. S4. Same analysis as in Fig. 3, but the probability of sampling a fossil horizon (i.e., FRP) from the last 25% of the ancestor’s range is doubled.
  • Fig. S5. Schematic illustrating how proposing an ancestor-descendant relationship based on temporal evidence does not necessarily constrain the first-discovered fossil in each species to be in the “correct” order (i.e., where the ancestor’s first-discovered fossil predates the descendant’s).
  • Table S1. Previously proposed ancestor-descendant hominin species pairs (n = 28), and the year discovered and geological ages of the first-discovered specimen in each species.
  • References (26, 27)

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Other Supplementary Material for this manuscript includes the following:

  • Data file S1 (.csv format). Hypothesized hominin ancestor–descendant species pairs.
  • Data file S2 (.csv format). Geological ages for first-discovered specimens of hominin species.
  • Data file S3 (.csv format). Four- to 1-Ma-old South African and eastern African hominin-bearing members and their geological ages.
  • Data file S4 (.pdf format). Dataset references.
  • Data file S5 (.R format). R code for analyses and creating figures.

Files in this Data Supplement: