Map of the Levantine sites with Helwan points.

<p>It shows the Abu Salem points sub-type, based on maps in Kozlowski and Aurenche <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068061#pone.0068061-Kozlowski1" target="_blank">[73]</a>. JQ-101 lays more than 500 km from the “core area”.</p

Map of the Neolithic Near East with the different geo-cultural zones of the core area (or Fertile Crescent), in green; after Aurenche and Kozlowski [82].

<p>The JQ-101 site is located in the southern part of the Nefud Desert in Saudi Arabia.</p

Map of artefacts distribution on surface at JQ-101, with trenches localisation.

<p>Map of artefacts distribution on surface at JQ-101, with trenches localisation.</p

Total number of lithics from the general surface collection and from the six trenches (systematic collection).

<p>Total number of lithics from the general surface collection and from the six trenches (systematic collection).</p

Three El-Khiam points from JQ-101.

<p>The enlarged views represent the basal ventrally retouched parts (x3). Top one (broken) is in crystal quartz.</p

Raw material types (counts) from the six trenches (systematic collection).

<p>Raw material types (counts) from the six trenches (systematic collection).</p

Burins from JQ-101.

<p>One long burin spall is shown bottom right.</p

Neolithic sites of northern Arabia and palaeohydrology.

<p>Potential Holocene drainage is displayed in blue, with currently severed drainage connections that may have been active during Holocene humid periods interpreted and displayed in grey. Numbered Wadis: (1) Wadi as Sirhan, (2) Wadi al Hamd, (3) Euphrates, (4) Wadi al Batin, (5) Wadi Sabha. Potential palaeolake or swamp deposits detected through remote sensing which may relate to Holocene humidity are displayed for the region surrounding Jubbah. All data is overlain upon SRTMv4 elevation data <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068061#pone.0068061-Jarvis1" target="_blank">[124]</a> and Natural Earth 2 offshore data. Archaeological site locations calculated from survey data of the ‘Comprehensive Archaeological Survey Programme’, more information is provided in Groucutt and Petraglia <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068061#pone.0068061-Groucutt1" target="_blank">[111]</a>.</p

Conventional and calibrated radiocarbon ages for site JQ-200.

a<p>Radiocarbon years before present (BP).</p>b<p>Calendar years BC and BP, calibrated using the IntCal09 data set <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068061#pone.0068061-Reimer1" target="_blank">[127]</a>. Age ranges are listed at both the 68% and 95% confidence interval (CI).</p

Others types of projectile points from JQ-101.

<p>Examples of different types of tanged with no barbs or barbed and tanged arrowheads.</p