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 aligned with Procompsognathus or deemed synonymous due to its vertebra being twice the size of the corresponding bone in Procompsognathus. P. trielbae has no diagnostic features, making it a nomen dubium.