Andreev, P.S.; Sansom, I.J.; Li, Q.; Zhao, W.; Wang, J.; Wang, C.-C.; Peng, L.; Jia, L.; Qiao, T.; Zhu, M.
range · taxonomy · morphology · geochronology · biogeography · ecology
Accepted manuscript and supplementary geological setting provide specimen, horizon and figure-level locators; isolated tooth whorls are not an articulated body.
Qianodus tooth whorls from late Aeronian strata at approximately 439 Ma anchor the 439–0 Ma Gnathostomata route; isolated dental elements provide a minimum sampled occurrence, not the origin of jaws, crown age or global FAD.
claim:taxon:gnathostomata:root-range