Table 1.

Values of the first principal component score trait means, variance, community-wide variance (${\sigma }_{\mathrm{MV}}^2/{\sigma }_{\mathrm{CV}}^2$), overlap (species trait width/total trait width), trait spaces found from hierarchical clustering, and lineage.

PC 1	variance	mean	${\sigma }_{\mathrm{MV}}^2/{\sigma }_{\mathrm{CV}}^2$	overlap	trait space	lineage
Sw. cf. adenticulatus	0.03	−0.01	0.16	0.64	1	early Asselian
Sw. aff. binodosus	0.02	0.06	0.16	0.55	2	early Asselian
Sw. binodosus	0.03	0.1	0.17	0.72	2	Sakmarian
Sw. whitei	0.03	0.06	0.18	0.76	2	late Asselian
Sw. anceps	0.03	0.14	0.18	0.7	3	Sakmarian
Sw. asymmetricus	0.04	−0.1	0.2	0.77	4	Artinskian
Sw. clarki	0.05	−0.19	0.22	0.77	5	Artinskian
Sw. obliquidentatus	0.05	−0.24	0.21	0.85	5	late Asselian