Table 3b.

Quantification of closure per species, including outgroup taxa (*), for all crania studied. Percentage of suture sites scoring 1 (open) or 4 (closed) for each species and evaluation of overall closure exhibited by a given species

Species	% open (score 1)	% closed (score 4)	% closure
Marmota marmota*	0	0	43
Castor fiber*	42	0	34
Ondatra zibethicus*	23	10	54
Nannospalax ehrenbergi*	3	6	75
Rhizomys sumatrensis*	39	0	49
Thryonomys swinderianus	52	0	34
Hystrix cristata	26	0	40
Hystrix brachyura	0	3	44
Atherurus africanus	39	3	39
Bathyergus suillus	42	29	56
Sphiggurus villosus	13	0	52
Sphiggurus insidiosus	0	10	60
Erethizon dorsatum	29	3	49
Coendou prehensilis	0	10	55
Cuniculus paca	52	0	35
Myoprocta acouchy	52	10	38
Dasyprocta leporina	45	0	36
Dasyprocta fuliginosa	61	3	38
Kerodon rupestris	52	3	44
Hydrochoerus hydrochaeris	68	0	33
Dolichotis patagonum	42	0	37
Galea spixii	55	3	40
Cavia porcellus	42	0	40
Cavia aperea	39	6	43
Spalacopus cyanus	52	13	46
Octodon degus	42	0	43
Proechimys cuvieri	32	0	42
Makalata armata	32	10	54
Myocastor coypus	32	0	40
Capromys pilorides	35	3	40
Chinchilla lanigera	29	0	41