Table 1.

Vertebrate datasets

	Clade sizes
Group	No. clades	Mean	(min, max)	Phylogeny	Body size
Fish	12	105	(37, 251)	Collected (10, 45–53)	Length from fishbase.org
Amphibians	4	176	(103, 231)	Pruned from refs. 39 and 54	Length from ref. 55
Reptiles	24	127	(53, 220)	Pruned from refs. 56 and 57	Length from ref. 58
Birds	17	111	(56, 260)	Pruned from ref. 41	Mass from ref. 59
Mammals	9	158	(69, 229)	Collected (60–66)	Mass from ref. 67
Total	66	126	(37, 260)	—	—

Data were collected for N = 66 clades for 8,323 species records in total (mean 126 species per clade). The “Phylogeny” column indicates how phylogenies within each vertebrate group were generally acquired: by pruning from a large tree or by collecting independently estimated trees from the literature.