Table 4 Measurements of the carpometacarpus of Gastornis sp. from Louvois, compared to carpometacarpi of G. parisiensis, from Cernay, and G. giganteus from the USA (mm)

Total length

81.8 as preserved

67.3

ca. 53.1–63.0–64.5

Greatest dorsoventral diameter of carpal trochlea

22.6 as preserved

–

12.5–12.7–13.1–13.4–15.6

Greatest craniocaudal diameter of proximal metacarpal symphysis

36.6 as preserved

23.3

>22.4–24.8–ca. 27.5

Greatest dorsoventral diameter of proximal metacarpal symphysis

23.3 as preserved

–

–

Length from prox. surface of carpal trochlea to dist. extr. of alular process

33.6

26.5

18.0–22.0–ca. 22.9–24.0–25.5

Idem to prox. end of intermetacarpal space

31.0 as preserved

22.0^a

23.8–28.5–29.3^b

Length of intermetacarpal space

17.4

ca. 38^a

Craniocaudal diameter of major metacarpal at mid-length

14.0

–

–

Dorsoventral diameter of major metacarpal at mid-length

16.1

–

–

Craniocaudal diameter of minor metacarpal

3.4

–

–

Dorsoventral diameter of minor metacarpal

4.7

–

–

Craniocaudal diameter of distal part

14.2 as preserved

13.6

–

Dorsoventral diameter of distal part

20.1 as preserved

–

–