TABLE 1.

Set of numbered fossil calibrations with minima and maxima.

Number	Clade constrained	Calibration	Maxima	Minima
1	Chelicerata	Wisangocaris barbarahardyae	538.8	509
2	Euchelicerata	Chasmataspis-like resting traces		500.5
3	Arachnopulmonata	Palaeophonus loudonensis	509	432.6
4	Opiliones	Eophalangium sheari	509	405
5	Acari	Protocarus crani	509	405
6	Sarcoptiformes	Protochthonius gilboa		382.7
7	Pedipalpi	Parageralinura naufraga		319.9
8	Palpatores	Macrogyrion cronus		298.75
9	Araneae	Palaeothele montceauensis		298.75
10	Avicularoidea	Rosamygale grauvogeli		240.5
11	Xiphosurida	Tachypleus gadeai		236
12	Synspermiata	Eoplectreurys gertschi		158.1
13	Entelegynae	Mongolarachne jurassica		158.1
14	Araneoidea	Unnamed Linyphiinae		129.41
15	Bipectina	Cretamygale chasei		125
16	Bothriuoidea + Scorpionoidea + “Chactoidea”	Protoischnurus axelrodurum		112.6
17	Cyphopthalmi	Palaeosiro burmanicum		98.17
18	Laniatores	Petrobunoides sharmai		98.17
19	Metastriata	Amblyomma birmitum		98.17
20	Buthida	Uintascorpio halandrasorum		48.5
21	Lobopodia	Rusophycus avalonensis	559	528.82
22	Altocrustacea	Yicaris dianensis		514
23	Progoneata	Casiogrammus ichthyeros		426.9
24	Chilopoda	Crussolum sp.		416
25	Hexapoda	Rhyniella praecursor		405
26	Aparaglossata	Westphalomerope maryvonnae		313.7
27	Onychophora	Cretoperipatus burmiticus		100
	Mandibulata		538.8