Halticosaurus is a dubious genus of theropod dinosaur originating from the late Triassic period, specifically the middle Norian stage, which corresponds to approximately 215.6–208 million years ago. This dinosaur is known from a sole fragmentary fossil specimen attributed to the species H. longotarsus. The fossil was discovered within the Middle Stubensandstein formation, located in what is now Germany.

Regrettably, the solitary known specimen is poorly preserved and raises doubts regarding its authenticity since it might have been assembled using bones from unrelated animals. To ascertain which bones truly belonged together and to determine the precise classification of Halticosaurus, further comprehensive research would be needed. Unfortunately, many of the bones associated with this specimen have been lost over time. Consequently, Halticosaurus is categorized as a nomen dubium, a name with uncertain or doubtful validity.

The name Halticosaurus originates from the Greek words "altikos," signifying "good at jumping" or "nimble," and "sauros," meaning "lizard." Thus, it translates to "nimble lizard." In 1992, Michael Benton observed that the skull measured 18 inches (46 cm) in length but was notably slender, featuring large fenestrae (openings). The legs of the specimen were robust, while its arms were relatively short. Benton estimated that Halticosaurus could have reached a length of approximately 5.5 meters (18.0 feet).

In conclusion, Halticosaurus remains enigmatic due to the incomplete and poorly preserved nature of its single specimen. It is characterized as a lightly built theropod dinosaur that coexisted with similar theropods in its European habitat.