Genus Nantis .

Synapomorphies:

1. Rhinosphenoid (47): (1> 0) absent. Reversal of synapomorphy 2 of the Characidae . Paralleled in nodes 207, 260, and 280 and in Aphyocharax nattereri, Attonitus ephimeros, Brycon orbignyanus, Bryconamericus scleroparius, Hollandichthys multifasciatus, Pseudocorynopoma doriae, and Salminus brasiliensis .

2. Ventral extent of third infraorbital (64): (0> 1) not reaching horizontal arm of preopercle, at least anteriorly. Reversal of synapomorphy 2 of node 198. Paralleled in node 280 and in Aphyodite grammica, Axelrodia lindeae, Bryconamericus rubropictus, and Creagrutus cf. taphorni .

3. Canal of lateral line on caudal-fin membrane (92): (1> 0) absent. Reversal of synapomorphy 3 of the Characidae . Paralleled in the Aphyoditeinae and Bryconops clade, in nodes 227, 229, 244, 287, and 294, and in Aphyocharax nattereri, Bryconamericus rubropictus, B. thomasi, Charax stenopterus, Hyphessobrycon anisitsi, Inpaichthys kerri, and Phenacogaster tegatus .

4. Ventral margin of horizontal process of anguloarticular (109): (1> 0) posteroventrally angled relative to laterosensory canal of dentary from medial view. Reversal of synapomorphy 1 of node 199. Paralleled in nodes 195 and 280 and in Attonitus ephimeros .

5. Posterior extent of ventral process of quadrate (151): (0> 1) falling short of posterior margin of symplectic. Paralleled in the Hyphessobrycon luetkenii clade and Iguanodectinae, in nodes 284 and 289 and in Astyanax mexicanus, A. cf. rutilus, Aulixidens eugeniae, Cyphocharax spilotus, Diapoma speculiferum, Hemiodus cf. thayeria, Metynnis maculatus, Micralestes stormsi, Moenkhausia sanctaefilomenae, Nematocharax venustus, Probolodus heterostomus, Psellogrammus kennedyi, and Pseudocorynopoma doriae . Some trees: Paralleled in node 302.

6. Posterior margin of cleithrum (234): (1> 0) without concavity ventral to first postcleithrum. Reversal of synapomorphy 2 of node 196. Paralleled in Cheirodon interruptus and Inpaichthys kerri .

7. Longitudinal position of insertion of adductor mandibulae tendon on dentary (330): (1> 0) on vertical through posterior half of Meckelian cartilage. Reversal of synapomorphy 1 of node 241. Paralleled in node 237 and in Attonitus ephimeros .