Table 2. Skull and mandible measurements of current species of Pterodroma (Pt. madeira from Madeira Island, Pt. deserta from Bugio Islet, Madeira Archipelago, Pt. feae from Cape Verde Archipelago, and Pt. cahow from Bermuda Island) and Pt. zinorum from Pico Island (Azores Archipelago), Pterodroma sp. A from North Dunes of Porto Santo (Madeira Archipelago), and Pterodroma sp. from Canary Islands. Sample size, mean length ± standard error (mm), and range are given. Measurements as in Rando (2002).
|
Pt. madeira |
Pt. deserta |
Pt. feae |
Pt. cahow |
Pt. zinorum |
Pterodroma sp. A |
Pterodroma sp. |
|
Madeira |
Bugio |
Cape Verde |
Bermuda |
sp. nov. |
Porto Santo |
Canary Islands |
|
|
|
|
|
Pico |
|
|
| Skull |
| Length |
(1) 66.7 |
(3) 74.2 ± 1.5 |
(1) 71.3 |
(1) 71.7 |
(3) 64.8 ± 1.8 |
(1) 72.2 |
(1) 76.7 |
|
|
76.3–72.7 |
|
|
66.4–62.3 |
|
|
| Height |
(1) 19.7 |
(3) 20.4 ± 0.1 |
(1) 20.2 |
(1) 20.1 |
(5) 20.3 ± 0.2 |
|
(2) 23.1 ± 0.7 |
|
|
20.3–20.4 |
|
|
20–20.4 |
|
23.6–22.6 |
| Width |
(1) 26.7 |
(3) 29.5 ± 0.7 |
(1) 28 |
(1) 28.8 |
(1) 26.3 |
|
(1) 30.1 |
|
|
30.2–28.6 |
|
|
|
|
|
| Interorbital width |
(1) 9.6 |
(3) 10.1 ± 0.1 |
(1) 10.1 |
(1) 8.5 |
(5) 9.7 ± 0.6 |
(2) 9.6 ± 0.1 |
(2) 10 ± 0.9 |
|
|
10.1–10 |
|
|
10.3–8.7 |
9.6–9.5 |
9.3–10.7 |
| Maxila dorsal length |
(4) 32.6 ± 0.6 |
(3) 36.8 ± 0.4 |
(1) 35.3 |
(1) 35.2 |
(2) 31.4 ± 1.2 |
(1) 34.7 |
(1) 39.5 |
|
33.6–31.8 |
37.1–36.2 |
|
|
32.5–30.2 |
|
|
| Maxilla length |
(3) 29.1 ± 0.4 |
(3) 31.5 ± 1 |
(1) 31.6 |
(1) 30.9 |
(2) 26.2 ± 0.2 |
(1) 29.9 |
(1) 33.1 |
| (from jugal articula- |
29.6– 28.6 |
32.9–30.8 |
|
|
26.4–26 |
|
|
| tion) |
|
|
|
|
|
|
|
| Culmen length (from |
(6) 18.5 ± 0.4 |
(3) 20.2 ± 0.8 |
(1) 19.6 |
(1) 19.6 |
(3) 16.9 ± 0.9 |
(1) 18.8 |
(1) 21.3 |
| anterior edge of narina) |
19.2–18 |
21.2–19.5 |
|
|
17.9–15.8 |
|
|
| Culmen width |
(3) 11.1 ± 0.7 |
(3) 13.2 ± 0.5 |
(1) 13 |
|
(1) 11.1 |
|
(2) 14 ± 0.5 |
|
11.8–10.1 |
13.8–12.7 |
|
|
|
|
14.4 –13.7 |
| Width of the |
(4) 8.8 ± 0.4 |
(3) 10.8 ± 0.2 |
(1) 10.4 |
(1) 10.1 |
(5) 8.5 ± 0.3 |
(1) 8.9 |
(2) 11.6 |
| nasofrontal join |
9.1–8.1 |
11–10.6 |
|
|
8.9–8.1 |
|
11.6–11.6 |
| Mandible |
| Length |
(1) 52.35 |
(3) 58.4 ± 0.6 |
(1) 56.9 |
(1) 60.2 |
|
|
- |
|
|
59.2-57.6 |
|
|
|
|
|