Table 1

Calibration points used for relaxed Bayesian molecular clock analyses

Split

Bounds

Strata

Fossils

Reference

Max

Min


Euchelicerata-Pycnogonida

543

501

lower bound: first arthropods in the Early Cambrian

upper bound: base of Upper Cambrian

Rusophycus; Cambropycnogon klausmuelleri

Benton 1993 [41], Crimes 1987 [45], Waloszek and Dunlop 2002 [46]


origin of Xiphosura

445

Late Ordovician

Lunataspis aurora

Rudkin et al. 2008 [47]


origin of Scorpiones

428

Silurian

Allopalaeophonus caledonicus

Dunlop 2010 [43]


Mygalomorphae-Araneaomorphae

382.7

240

lower bound: Grès à meules, upper Buntsandstein, Trias;

upper bound: Givetian, middle Devonian

Rosamygale grauvogeli;

Attercopus fimbriunguis

Selden and Gall 1992 [48], Selden et al. 2008 [49]


Rehm et al. BMC Evolutionary Biology 2012 12:19   doi:10.1186/1471-2148-12-19

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