一个来自亚利桑那州的225亿年的爬行者,* Sonselaucheus cedrus*,在成熟时从四条腿转向两条腿运动,鳄鱼系亲属的鸟类特征不断演变。 A 225-million-year-old reptile from Arizona, *Sonselasuchus cedrus*, shifted from four-legged to two-legged movement as it matured, with bird-like features evolving in crocodile-line relatives.

一种新发现的类爬行动物, *Sonselasuchus cedrus*, 约22500万年前生活在亚利桑那州,由于后肢的不成比例生长,它可能从幼年时的四足转向成人时的双足. A newly discovered shuvosaurid reptile, *Sonselasuchus cedrus*, lived in Arizona around 225 million years ago and likely shifted from quadrupedalism as a juvenile to bipedalism as an adult, due to disproportionate growth of its hind limbs. 石化森林国家公园的化石,是3000多个标本的骨的一部分,揭示了鸟类般的身体,没有牙的嘴巴和空洞的骨,类似于通过融合进化的鸟类恐龙. Fossils from Petrified Forest National Park, part of a bonebed with over 3,000 specimens, reveal a bird-like body, toothless beak, and hollow bones, resembling ornithomimid dinosaurs through convergent evolution. 发现突显了三亚西克爬行动物的多样性 并表明一些类似恐龙的特征 早期在鳄鱼系亲属身上 演变而来 The find underscores the diversity of Triassic reptiles and suggests some dinosaur-like traits evolved earlier in crocodile-line relatives.