Pseudarmadillo cristatus is an extinct species of isopod (woodlouse) in the family Delatorreiidae known from a series of possibly Miocene[1] fossils found on Hispaniola.

[2] Pseudarmadillo cristatus is known from ten isopods of various developmental stages and both female and male all of which are inclusions in five different transparent chunks of Dominican amber.

The type specimens were collected from an undetermined amber mine, in fossil bearing rocks of the Cordillera Septentrional mountains, northern Dominican Republic.

The amber was produced by the extinct Hymenaea protera, which formerly grew on Hispaniola, across northern South America and up to southern Mexico.

[4] The Pseudarmadillo cristatus specimens are moderately well preserved, though since isopods lack the wax coatings found in insects, they show deterioration and distortion from the resin after entombment.