Terminology under ‘Portion’ after Blumenschine (1995), MSH: Mid-shaft fragment, NEF: Near epiphyseal fragment and EPIPH: Epiphyseal.

<p>Terminology under ‘Surface’ after Selvaggio and Wilder (2001).</p

Relationships between two measures of cutmark shape and cut-mark size.

<p>(A) Regression of logged measure 6 against log size for all the cut-marks measured. Blue dots refer to aquatic modifications. Red dots refer to terrestrial modifications. (B) Regression of logged measure 7 against log size for all the cut-marks measured. Blue dots refer to aquatic modifications. Red dots represent terrestrial modifications.</p

Demonstration of how mean cross-sectional size was measured on terrestrial and aquatic bone surface modifications using three-dimensional models rendered in usoft analysis software.

<p>Demonstration of how mean cross-sectional size was measured on terrestrial and aquatic bone surface modifications using three-dimensional models rendered in usoft analysis software.</p

Inter-analyst correspondence or agreement (number and proportion of same correct response) in (a) identifying the presence or absence of marks (locating), and (b) diagnosing the agent of modification for 36 specimens.

<p>Table shows results for both the inclusion and the exclusion abrasion marks associated with trampling.</p

Convex hulls of cut-mark cross-sectional breadth and depth (µm) for surface modifications on aquatic (red star) and terrestrial (blue dot) bone surfaces.

<p>Convex hulls of cut-mark cross-sectional breadth and depth (µm) for surface modifications on aquatic (red star) and terrestrial (blue dot) bone surfaces.</p

Demonstration of how measurements 5–7 were calculated.

<p>Demonstration of how measurements 5–7 were calculated.</p

PCA using variables of measure 1a and measures 2–7.

<p>Red dots represent each terrestrial modification and blue dots represent each aquatic modification. 3D models represent within group specimens with the highest loadings on each principal component. A and C represent aquatic and D and B represent terrestrial modifications.</p

Comparison of Vickers hardness values for mammalian and non-mammalian bone.

<p>See text for tests of significance.</p

Individual participant success scores diagnosing modifications.

<p>Individual participant success scores diagnosing modifications.</p

Cut-mark cross-sectional measurements 1–4 taken using three-dimensional models rendered in usoft analysis software.

<p>Cut-mark cross-sectional measurements 1–4 taken using three-dimensional models rendered in usoft analysis software.</p