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Fig. 15 | BMC Evolutionary Biology

Fig. 15

From: Internal cranial anatomy of Early Triassic species of †Saurichthys (Actinopterygii: †Saurichthyiformes): implications for the phylogenetic placement of †saurichthyiforms

Fig. 15

Results of phylogenetic analysis (maximum parsimony). a strict consensus of the 2430 MPTs (1421 steps, C.I: 0.217, R.I: 0.645) for 97 taxa and 275 characters of equal weight. Bremer decay indices above 1 are placed above nodes. Bootstrap values above 50% are placed below nodes. Synapomorphies common to all MPTs for selected nodes are as follows: a (Sarcopterygii): C.26(1), C.36(0), C.60(1), C.134(1); b (Actinopterygii): C.44(1), C.46(0), C.202(1); c (post-Devonian Actinopterygii): C.58(0), C.72(0), C.93(2,3), C.124(1), C.133(1), C.139(2), C.141(2), C.144(1), C.146(1), C.186(0), C.191(1), C.194(1), C.201(1), C.221(1), C.243(1); d (generalized Carboniferous–Triassic forms): no common synapomorphies; e ((†Saurichthyiformes + †Birgeria) + crown Actinopterygii): C.68(1), C.102(1), C.148(0), C.155(0), C.159(2), C.177(2), C.184(1),C.244(0); f (†Saurichthyiformes + †Birgeria): C.53(2), C.66(1), C.213(0), C.215(0), C.240(2); g (†Saurichthyiformes): C.20(1), C.31(1); h (crown Actinopterygii): C.44(0), C.105(1), C.133(0), C.224(0); i (Chondrostei + Cladistia): C.34(1), C.130(0), C.139(0), C.186(1), C.218(0), C.220(0); j (Chondrostei): C.69(0), C.92(1), C.104(1), C.107(1), C.160(1), C.177(3), C.185(1), C.212(2), C.221(0); k (Cladistia): C.3(0), C.95(1), C.103(1), C.131(1), C.231(1), C.265(0), C.267(1); l (total group Neopterygii): C.7(0), C.29(1), C.118(1), C.142(0), C.179(0); m (crown Neopterygii): C.74(1), C.75(1), C.115(1), C.121(1), C.182(1). b agreement subtree of 2430 MPTs containing 80 taxa

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