A revision of the Middle Triassic scanilepiform fish Fukangichthys longidorsalis from Xinjiang, China, with comments on the phylogeny of the Actinopteri

A 2017 CT-based analysis recovered scanilepiforms including Fukangichthys as stem polypterids, shifting many Palaeozoic ray-fins onto the actinopterygian stem and moving the study's crown minimum about 45 million years younger; this topology-dependent recalibration is not the crown's birth time.

The displayed 247–241.464 Ma interval is a Middle Triassic Kelamayi Formation envelope and is separate from the topology-dependent crown-actinopterygian calibration.

The Early actinopterygian evidence route navigation entity is source-linked only to the named specimen, dataset and analysis dossiers already cited by its range ledger. Its displayed span is a study-bounded route or sample envelope, not a biological taxon, ancestor sequence, global FAD/LAD or exact origin interval.