Table S2.

Results from simulated presence of shark teeth

Scenario	Cretaceous ratio	Paleocene ratio	Change factor	Change factor SD	Simulated shark teeth per sample
No shark teeth	0.65	1.67	2.57	n/a	0
1: 1% or at least 1	0.58	1.52	2.62	n/a	1
2: 5% or at least 1	0.58	1.44	2.48	n/a	1.27
3: Min = 0, max = 10	0.43	1.12	2.60	0.16	3.93
4: Min = 1, max = 10	0.4	1.07	2.66	0.15	4.43
5: Min = 0, max = 20	0.42	0.96	2.26	0.18	4.83
6: Min = 1, max = 20	0.4	0.92	2.33	0.16	5.32
7: Min = 1, max = 40	0.4	0.85	2.16	0.18	5.71