distinctive features on the fossil's hands. Pelecanimimus has conspicuously elongated metacarpals and phalanges, a feature also found in some later ornithomimosaur species. Therefore, the authors of the study identified and named a new group within the
ornithomimosaurs: the Macrocheiriformes, which means "forms with large hands." https://archaeologynewsnetwork.blogspot.com/2021/11/early-dinosaur-breathed-like-bird.html?m=1