Pseudoangustidontus (meaning "false Angustidontus") is a genus of hurdiid (peytoiid) radiodont from the Lower Ordovician of Morocco.

[4] Because of its partial remains, its classification was debated, but with more complete fossils it is identified as radiodont frontal appendage.

[1] Pseudoangustidontus is only described from frontal appendage remains, with an exception of MGL 108047_1, holotype of P. izidigua which preserved part of carapace.

[1] Pseudoangustidontus is speculated to be a filter feeder similar to Aegirocassis, that used numerous setae on its frontal appendages as mesh to catch microorganisms.

However, a specimen of P. izdigua had an unidentified shell or carapace with a diameter about 3 mm trapped in its setae, suggesting it could have fed on even larger prey.