连接埃德蒙顿龙（Edmontosaurus annectens），为埃德蒙顿龙属的一种，属于鸭嘴龙科（Hadrosauridae）中的栉龙亚科（Saurolophinae），生活在白垩纪最末期的北美洲。它的遗骸被发现于海尔河组与兰斯组。这些组的地质年代为白垩纪晚期的马斯垂可阶晚期，距白垩纪——第三纪灭绝事件还有300万年（距今6,800万年前至6,500万年前）。连接埃德蒙顿龙目前已发现了数个标本，包括至少20个部分到完整的头颅骨，发现于美国蒙大拿州、南达科他州和怀俄明州，还有加拿大的萨斯喀彻温。它是一种巨大的动物，大约12米（39英尺）长，还有非常长而矮的头骨。连接埃德蒙顿龙有很漫长的分类历史，先后分类为鸭龙属（Anatosaurus）、大鸭龙属（Anatotitan）、破碎龙属（Claosaurus）、双芽龙属（Diclonius）、强龙属（Thespesius）、糙齿龙属（Trachodon）。

Edmontosaurus annectens is a species of flat-headed or saurolophine hadrosaurid ornithopod dinosaur (a "duck-billed dinosaur") from the very end of the Cretaceous Period, in what is now North America. Remains of E. annectens have been preserved in the Frenchman, Hell Creek, and Lance Formations. All of these formations are dated to the late Maastrichtian stage of the Late Cretaceous Period, representing the last three million years before the extinction of the dinosaurs (between 67 and 66 million years ago). Edmontosaurus annectens is known from numerous specimens, including at least twenty partial to complete skulls, discovered in the U.S. states of Montana, South Dakota, North Dakota and Wyoming, Colorado and the Canadian province of Saskatchewan. It was a large animal, up to approximately 12 metres (39 ft) in length, with an extremely long and low skull. E. annectens exhibits one of the most striking examples of the "duckbill" snout common to hadrosaurs. It has a long taxonomic history, and specimens have at times been classified in the genera Diclonius, Trachodon, Hadrosaurus, Claosaurus, Thespesius, Anatosaurus, and Anatotitan, before being grouped together in Edmontosaurus.