Saichania was a bulky, heavily armoured dinosaur about 7 metres (23 ft) long. The armour on the top of its head and along its back and flanks were studded with large spikes, and it had a club-shaped tail. The skull had complex air passages, and an unusually solid hard palate. These may have allowed the animal to cool the air that it breathed, and to eat tough plants, suggesting that it lived in a hot, arid, environment. There is even some evidence that the animal may have possessed a salt gland next to its nostrils, which would have further aided it in a desert habitat.

Sauropelta ("Lizard shield") is a genus of nodosaurid dinosaur that existed in the Early Cretaceous Period of North America. One species (S. edwardsorum) has been named although others may have existed. Anatomically, Sauropelta is one of the most well-understood nodosaurids, with fossilized remains recovered in the U.S. states of Wyoming, Montana, and possibly Utah. It is also the earliest known genus of nodosaurid; most of its remains are found in the Cloverly Formation, which dates to about 115 to 110 Ma (million years ago). It was a medium-sized nodosaurid, measuring about 5 meters (16.5 ft) long. Sauropelta had a distinctively long tail which made up about half of its body length. Although its body was smaller than a modern black rhinoceros, Sauropelta was about the same mass, weighing in at about 1500 kilograms (3300 lb). The extra weight was largely due to its extensive bony body armor, including the characteristically large spines projecting from its neck.

Scelidosaurus ("Limb lizard") is a genus of quadrupedal, lightly plated, herbivorous dinosaur about 4 metres (13 ft) long. It lived during the Early Jurassic Period, during the Hettangian to Sinemurian stages around 208 to 194 million years ago. Its fossils have been found in both England and in Arizona, in the United States. Scelidosaurus has been called the earliest complete dinosaur. This genus and related genera have been found on three continents.

Stegosaurus is a genus of stegosaurid armoured dinosaur from the Late Jurassic Period in what is now western North America. In 2006, a specimen of Stegosaurus was announced from Portugal, showing that they were present in Europe as well. A large, heavily built, herbivorous quadruped, Stegosaurus had a distinctive and unusual posture, with a heavily arched back, short forelimbs, head held low to the ground and a stiffened tail held high in the air. Its array of plates and spikes has been the subject of much speculation. The spikes were most likely used for defense, while the plates have also been proposed as a defensive mechanism, as well as having display and thermoregulatory (heat control) functions. Stegosaurus was the largest of all the stegosaurians (bigger than genera such as Kentrosaurus and Huayangosaurus) and, although roughly bus-sized, it nonetheless shared many anatomical features (including the tail spines and plates) with the other stegosaurian genera.

Tarchia ("Brain") is a genus of ankylosaurid dinosaur from the late Cretaceous of Mongolia. Tarchia is one of the largest known Asian ankylosaurs, with an estimated body length of 8 to 8.5 metres (26 to 28 ft), a skull length of 40 centimetres (16 in), and skull width of 45 centimetres (18 in). Tarchia may have weighed as much as 4.5 tonnes (5.0 short tons). Named for its massive skull, Tarchia currently includes only the type species, T. gigantea. The rocks in which they were found likely represent eolian dunes and interdune environments, with small intermittent lakes and seasonal streams. Hence, we know that Tarchia was a desert animal.

Tuojiangosaurus ("Tuo River lizard") is a genus of stegosaurid dinosaur from the Late Jurassic Period, recovered from the Upper Shaximiao Formation of what is now Sichuan Province in China. Physically similar to the North American Stegosaurus, Tuojiangosaurus is the best understood of the Chinese stegosaurs. It was around 7 metres (23 ft) long and 2 metres (6.6 ft) high, with a postulated weight of around 4 tonnes (4.4 short tons). Like its compatriot Kentrosaurus, Tuojiangosaurus had two rows of pointed plates along the spine, which became taller over the hip region. It also had two outward-pointing spikes on each side of the end of the tail, angled approximately at 45 degrees to the vertical. In stegosaurs, this spike arrangement has become affectionately known as the "thagomizer". It also had the typical narrow head, bulky body, and low teeth of other stegosaurids.

Wuerhosaurus is a genus of stegosaurid dinosaur from the Early Cretaceous Period of China. As such, it was one of the last genera of stegosaur known to survive, since most others died out in the late Jurassic. It was probably a broad bodied animal roughly 6 metres (20 ft) long, but only a few scattered bones have been found, making a full restoration difficult. Its dorsal plates were much rounder than other stegosaurids. It was lower to the ground than most other stegosaurids; scientists believe that this was an adaptation to let it feed on low-growing vegetation. Unlike Stegosaurus, Wuerhosaurus had shorter, rounded plates, whose purpose is debated. Wuerhosaurus, like other stegosaurids, had a thagomizer on the end of its tail, which featured four bony spikes that would most likely have been used for self-defense.