Mystriosuchini, historically known as Pseudopalatinae, is an extinct tribe (formerly subfamily) of derived phytosaurs in the clade Leptosuchomorpha.

The name is derived from the genus Mystriosuchus, and the clade was phylogenetically defined by Andrew S. Jones and Richard J. Butler in 2018 as the last common ancestor and all descendants of Mystriosuchus planirostris, Machaeroprosopus jablonskiae, and Machaeroprosopus buceros.

[1] Genera classified in Mystriosuchini include Coburgosuchus, Machaeroprosopus, Mystriosuchus, Nicrosaurus and Redondasaurus.

[2][3] It includes the most ecologically divergent phytosaurs, the terrestrial Nicrosaurus[4] and the fully aquatic Mystriosuchus.

[5] Below is a cladogram from Stocker (2012):[6] Wannia scurriensis Paleorhinus bransoni "Paleorhinus" sawini Brachysuchus megalodon Angistorhinus Rutiodon carolinensis "Machaeroprosopus" zunii Protome batalaria "Phytosaurus" doughtyi