Sometimes, it is aligned with Procompsognathus, or even considered to be synonymous with it, despite being based on a vertebra that is twice the size of the corresponding bone in Procompsognathus. P. trielbae has no diagnostic features and is therefore considered a nomen dubium.
It can be associated with Procompsognathus or considered synonymous, despite having a vertebra that is twice the size of the corresponding bone in Procompsognathus. P. trielbae lacks distinctive characteristics and is therefore regarded as an ambiguous name.