Skip to main content

Table 1 Node time estimates for major splitting events

From: Molecular phylogeny of Squaliformes and first occurrence of bioluminescence in sharks

Nr. Node Node age 95 % HPD Series/Epoch
1 Squalomorphii 202.8 190 – 241.32 Middle Triassic to Lower Jurassic
2 Splitting of Squaliformes from the clade comprising Echinorhinus, Squatina, Pliotrema & Pristiophorus 177.34 153.85 – 203.99 Upper Triassic to Upper Jurassic
3 Clade comprising Echinorhinus, Squatina, Pliotrema & Pristiophorus 147.59 145-156.1 Upper Jurassic
4 Radiation Squaliformes 132.86 130 – 143.18 Lower Cretaceous
5 Split Centrophoridae from Dalatiidae, Etmopteridae, Oxynotidae & Somniosidae 126.68 113.94 – 137.88 Lower Cretaceous
6 Split Dalatiidae from Etmopteridae, Oxynotidae & Somniosidae 116.1 99.2 – 131.01 Transition Lower to Upper Cretaceous
7 Split Etmopteridae from Somniosidae & Oxynotidae 110.51 92.81 – 124.88 Transition Lower to Upper Cretaceous
8 Split Centrophorus from Deania 90.82 89 – 96.84 Upper Cretaceous
9 Split Somniosus from Oxynotidae & remaining Somniosidae 92.29 64.8 – 114.49 Upper Cretaceous
10 Radiation Dalatiidae 83.57 65 – 105.4 Upper Cretaceous
11 Radiation Etmopteridae 77.15 65 – 90.66 Upper Cretaceous
12 Radiation Etmopterus 60.38 46.28 – 74.64 Upper Cretaceous to Palaeocene
13 Split Trigonognathus from Aculeola & Centroscyllium 61.5 44.5 – 76.86 Upper Cretaceous to Palaeocene
14 Radiation Somniosidae excluding Somniosus 43.4 24.46 – 63.94 Eocene
15 Split Oxynotus from Scymnodon 28.91 15.32 – 47.11 Oligocene