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. 2008 Jul 23;8:215. doi: 10.1186/1471-2148-8-215

Table 2.

Maximum (U) and minimum (L) time constrains (MYA) used for dating at nodes in Fig. 2

Node Constraint Reference information
A L416 Psarolepis fossil (the earliest Sarcopterygii) from Ludlow (Silurian) [2]Lophosteus and Andreolepis fossils (the earliest Actinopterygii) from Ludlow (Silurian) [64]
A U528 Probable divergence time between chondrichthyans and osteichthyans (528 MYA), based on both fossils and molecules [58]
B L392 Stem-actinopterans known from the Givetian/Eifelian boundary [57]
B U450 Probable divergence time between sarcopterygians and actinopterygians (450 MYA), based on both fossils and molecules [6,58]
C L345 Tournasian Cosmoptychius as the earliest stem-group neopterygian [57]
C U392 Estimated divergence time between polypterids and actinopterans [57]
D L130 Protosephuru (paddlefish) from Hauterivian (Cretaceous) [57]
E L284 Brachydegma from early Permian [57]
F L136 Stem-hiodontid Yambiania from the Lower Cretaceous [57]
G L112 Osteoglossoid fossil from the Aptian (Cretaceous) [4]
H L151 Stem-elopomorph Elopsomolos from the Kimmeridgian (Jurassic) [57]
I L90 Albuloid fossil from the Cenomanian (Cretaceous) [4]
J L50 Anguillid and congrid fossils from the Ypresian (Tertiary) [4]
K L146 Stem-ostariophysan Tischlingerichthys from Tithonian (Jurassic) [57]
L L57 Clupeid fossil from the Thanetian (Tertiary) [4]
M L50 Cyprinid fossil from the Ypresian (Tertiary) [4]
N L74 Esociform fossil from the Campanian (Cretaceous) [4]
O L94 Polymixiid fossil from the Cenomanian (Cretaceous) [4]
P L50 Pleuronectiform fossil from the Ypresian (Tertiary) [4]
Q L98 Tetraodontiform fossil from the Cenomanian (Cretaceous) [2]
R L32 Estimated divergence time between Takifugu and Tetraodon [2]