Table 1.

Body masses of amniotes (g)

	n	Mean	Median	Minimum	Maximum	Orders of magnitude
Aves	9281	51	36.4	1.9	109,250	4.8
Mammalia	5364	197	79.7	1.6	190,000,000	8.1
Squamata	10,825	18.2	14.3	0.07	345,144	6.7
Testudines	308	397	2804	93.1	950,000	4

n = number of species with data. Means are back transformed from logarithms