In the early 1990s a theropod dinosaur found close to the Triassic-Jurassic boundary of France was assigned to a second species of the genus Liliensternus: L. airelensis (Moon Airel Formation). This contribution reveals that common features that purportedly unite “L.” airelensis with L. liliensterni are more widely distributed among coelophysoids and basal dinosaurs than it was thought. A cladistic analysis reveals that “L.” airelensis is more closely related to the Coelophysidae than to L. liliensterni. A feature that supports this systematic arrangement includes a supraacetabular crest forming a well-developed ridge continuous with the lateral margin of the brevis fossa, with non-distinct notch between both structures. The new genus Lophostropheus, gen. nov., is therefore erected to include the species L. airelensis. Thus, the new combination Lophostropheus airelensis is proposed.
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