[2] Piras et al. (2007) advocated transferring both G. americanus and G. carolinensis to Thecachampsa as distinct species of the latter genus, however.

[3] Jouve et al. (2008) retained G. americanus in Gavialosuchus and found it to be the sister group of G. eggenburgensis (G. carolinensis was not discussed).

[5] Christopher A. Brochu and Glenn W. Storrs (2012) tested all four species, along with other crocodyloids, and found relatively strong support for Piras et al. (2007) suggestion.

[6] Weems (2018) agreed with Piras et al. (2007) and Brochu & Storrs (2012) at americanus and carolinensis are part of Thecachampsa.

[9] However, recent molecular studies using DNA sequencing have consistently indicated that the false gharial (Tomistoma) (and by inference other related extinct forms in Tomistominae) actually belong to Gavialoidea.