Table 1.
The frequency of aquatic-derived residues associated with Incipient and Initial Jōmon pottery from Japan
| Period | Samples (with lipid) | Full suite of aquatic biomarkers,* % (n) | Partial suite of aquatic biomarkers,† % (n) | Phytanic acid, % (n) | >75.5% SSR-phytanic, % (n) | Minimum number of aquatic vessels,‡ % (n) |
| Incipient (ca. 14,460–11,310 cal BP) | 179 (156) | 30.8% (48) | 7.1% (11) | 93.6% (146) | 43.6% (68) | 46.8% (73) |
| Initial (ca. 11,500–8,000 cal BP) | 622 (566) | 10.8% (61) | 6.9% (39) | 77.0% (436) | 42.0% (238) | 45.2% (256) |
| Total | 801 (722) | 15.1% (109) | 6.9% (50) | 80.6% (582) | 42.4% (306) | 45.6% (329) |
*
Presence of C18 and C20 APAAs together with one of three isoprenoid fatty acids.
†
Presence of C18 APAAs and TMTD.
‡
Having either phytanic acid SSR ratio >75.5% or containing aquatic biomarkers.