Table 7.
Tentative evaluation of divergence times
| Clade | Calibration 1 | Calibration 2 |
|---|---|---|
| Ingroup |
13.2 (8.0–18.5) |
16.2 (9.8–23.5) |
| AR-PE |
8.5 (5.5–11.9) |
9.6 (6.0–13.4) |
| EA-NE-NW-CO |
8 (4.9–11.5) |
10.2 (4.9–16.5) |
| NW-NE-CO |
5.8 (2.7–8.4) |
7.7 (3.5–12.6) |
| NE-CO |
3.3 (0.9–4.9) |
4.3 (1.8–7.1) |
| PE |
0.3 (1.1 -2 – 0.8) |
0.4 (1.9 -2 – 1.2) |
| AR |
0.6 (9.4 -2 – 1.5) |
0.8 (0.1–2.4) |
| EA |
1.7 (0.3–7.8) |
1.8 (0.3–5.5) |
| NE |
0.5 (0.1–1.0) |
0.9 (0.2–2.5) |
| NW |
0.5 (6.2 -2 – 1.1) |
0.9 (0.1–3.8) |
| CO | 8.1-2 (1.8 -3 – 0.2) | 0.23 (2.1 -3 – 0.7) |
Comparison of divergence times found in this study with calibration 1 (outgroup-ingroup at 20 ± 5 Mya and PE-AR at 10 ± 2 Mya) and calibration 2 (PE-AR at 10 ± 2 Mya and NW-NE-CO at 6 ± 1 Mya). Times are in millions of years (Mya) and refer to mean estimated ages (and confidence intervals) of the specified clade. NW = Ecuador, Costa Rica, Mexico, Texas; CO = Colombia; NE = French Guiana + Venzuela + Brazil (Rondonia); EA = Brazil (Atlantic Coast, Mato Grosso) + Argentina (Yungas); AR = Agentina + Paraguay (Chaco); PE = Perú.