The putative ceratosaur Procompsognathus triassicus in a full-out sprint. Procompsognathus has been called a ceratosaur, indeterminate diapsid, crocodylomorph, and sometimes a combination of the three! This taxon is based on a partial skeleton, but the skull may not come from the same animal. More work needs to be done, in order to firm up this animal's relationships.