Table 3. Spine ratios (means and ranges) of †Kenyaichthys gen. et sp. nov. and the recent cyprinodontiform species used for comparison.
| Species | NS2/NS4 | NS2/NS5 | HS2/HS4 | HS2/HS5 | NS3/NS5 | HS3/HS5 |
|---|---|---|---|---|---|---|
| †Kenyaichthys gen. et sp. nov. (all specimens) | 1.6±0.5 / 1.1–4.3 (75) w | 1.8±0.5 / 1.1–3.1 (66) w | 2.4±0.5 / 2.0–3.7 (13) dw | 2.3±0.4 / 2.0–3.7 (19) dw | 1.8±0.5 / 1.1–3.3 (70) w | 1.6±0.5 / 1.1–3.0 (70) w |
| 1.4±0.2 1.1–1.9 (48) sw | 1.5±0.2 1.2–1.8 (47) sw | |||||
| 0.8±0.2 / 0.5–1.0 (7) ne | 0.9±0.2 / 0.6–1.0 (13) ne | 0.9±0.1 / 0.6–1.0 (15) ne | 0.8±0.1 / 0.6–1.0 (8) ne | 0.9±0.2 / 0.3–1.0 (15) ne | 0.8±0.2 / 0.5–1.0 (14) ne | |
| Aphanius sophiae | 3.2±1.3 / 1.6–5.4 (19) w | 4.3±1.3 / 2.6–8.0 (19) w | 3.1±0.8 / 2.0–4.4 (17) dw | 4.3±1.2 / 2.8–7.2 (19) dw | 4.0±1.3 / 2.3–6.5 (19) w | 3.9±1.3 / 2.2–6.6 (19) w |
| 1.6±0.3 / 1.5–1.8 (2) sw | – | |||||
| – | – | – | – | – | – | |
| Aphanius farsicus | 4.1±2.0 / 2.3–7.0 (6) w | 5.0±1.4 / 3.5–7.5 (6) w | 3.6±2.0 / 2.0–6.2 (5) dw | 5.4±1.6 / 3.5–7.8 (6) dw | 4.3±1.5 / 1.5–5.8 (6) w | 4.8±1.7 / 2.7–7.3 (6) w |
| 1.9 (1) sw | – | |||||
| – | – | – | – | – | – | |
| Aphanius arakensis | 4.4±3.9 / 2.1–12.0 (6) w | 5.4±1.9 / 2.8–7.7 (5) w | 4.6±3.4 / 2.1–10.5 (5) dw | 6.0±2.2 / 4.0–10.0 (6) dw | 5.4±1.9 / 3.0–7.8 (5) w | 5.5±1.5 / 3.3–7.2 (6) w |
| 1.7 (1) sw | – | |||||
| – | – | – | – | – | – | |
| Aphanius mesopotamicus | 3.1±0.7 / 2.3–3.5 (3) w | 3.5±1.5 / 2.1–5.7 (4) w | 2.8±0.2 / 2.6–5.3 (3) dw | 3.7±1.2 / 2.7–5.3 (4) dw | 3.1±0.7 / 2.4–4.0 (4) w | 3.7±1.5 / 2.3–5.7 (4) w |
| – | – | |||||
| 1.0 (1) ne | – | 1.0 (1) ne | – | – | – | |
| Pachypanchax playfairii | 3.2±1.8 / 1.9–4.4 (2) w | 5.0±1.8 / 3.8–6.3 (2) w | 2.3 (1) dw | 3.2±0.6 / 2.8–3.6 (2) dw | 3.2±0.0 / 3.1–3.2 (2) w | 2.8±0.8 / 2.3–3.4 (2) w |
| 1.6 (1) sw | – | |||||
| – | – | – | – | – | – | |
| Nothobranchiidae | 2.6±0.6 / 1.8–3.7 (10) w | 2.9±1.1 / 1.4–5.4 (9) w | 2.9±0.7 / 2.0–4.0 (7) dw | 3.4±1.4 / 2.0–5.3 (6) dw | 1.9±0.8 / 1.2–3.6 (7) w | 2.2±1.1 / 1.2–4.5 (9) w |
| 1.5±0.1 / 1.4–1.5 (3) sw | 1.5±0.2 / 1.3–1.8 (3) sw | |||||
| – | – | – | 1.0 (1) ne | 0.9±0.1 / 0.8–1.0 (2) ne | 1.0 (1) ne |
(), number of specimens; dw, distinctively wider; HS, haemal spine of preural centrum; ne, narrower or equal; NS, neural spine of preural centrum; w, wider; sw, slightly wider. Blank cells indicate unassigned character state.