The Ankylosaurids Differ From The Nodosaurids Because: A. Known as the "node lizards", the nodosaurids are the second of the three families of ankylosaurs. The muzzle of nodosaurids is narrow as compared with ankylosaurids. They are set apart from the other families because they have spines on the shoulders and neck that protrude outwards. Ankylosauria is split into two families, Nodosauridae (the nodosaurids) and Ankylosauridae (the ankylosaurids). Ankylosaurids had thinner plates, just 0.5 to 1.0 cm thick, but the undersides were hollowed out, creating a dome shape which may have added strength. But, in contrast to the nodosaurids… Based on analogies with modern ungulates, the narrow muzzle suggests selective feeding. In both ankylosaurids and nodosaurids, however, the last resort must have been to hunker down defensively. The presence of cheek plates, formed within the skin, indicates nodosaurids had a fleshy, probably non-musculature, cheek. One of the first armored dinosaurs discovered in North America, Nodosaurus is unlocked by the Hammond Foundation upon completion of the Science Division mission on Isla Tacaño. Classification. 12.) With its legs folded under its body, a 3,500 kg ankylosaur would have been formidably immobile. You don't want to meet up with either family. The nodosaurids had narrow heads, and frequently had large spikes protruding from their bodies. Nodosaurids have no clubs but are fierce looking with big spikes projecting from its sides. The teeth are adapted for vegetation and show some tooth-to-tooth wear. Nodosaurids, their sister group, sported massive osteoderm spikes on their shoulders instead of clubs on their tails. 1 Classification 1.1 Nodosauridae 1.2 Ankylosauridae 1.3 Polacanthidae 2 Taxonomy Ankylosauria is usually split into two families: Nodosauridae (the nodosaurids) and Ankylosauridae (the ankylosaurids). Ankylosauria is a group of herbivorous dinosaurs of the order Ornithischia.It includes the great majority of dinosaurs with armor in the form of bony osteoderms, similar to turtles.Ankylosaurs were bulky quadrupeds, with short, powerful limbs.They are known to have first appeared in the early Jurassic Period, and persisted until the end of the Cretaceous Period. The big difference is that most ankylosaurids (except the "polacanthines") have bony clubs at the end of their tails, which nodosaurids lack.. Also, they do not have a club on their tail, unlike the ankylosaurids. They Have Narrow Tapering Beaks While The Latter Show Wide Ones. Nodosaurus is a genus of nodosaurid dinosaur that originated from Late Cretaceous North America. D. They Had Lacked Bony Eyelids While The Latter Did Not. Ankylosauria is split into two families, Nodosauridae (the nodosaurids) and Ankylosauridae (the ankylosaurids). B. The nodosaurids had narrow heads, and frequently had large spikes protruding from their bodies. A third family, the Polacanthidae, is sometimes used,[4] but is more often found to be a sub-group of one of the primary families. Nodosaurids, like their close relatives the ankylosaurids, were heavily armored dinosaurs adorned with rows of bony armor nodules and spines (osteoderms), which were covered in keratin sheaths.All nodosaurids, like other ankylosaurians, were medium-sized to large, heavily built, quadrupedal, herbivorous dinosaurs, possessing small, leaf-shaped teeth. Safe under protective armor, both nodosaurids and ankylosaurids were the best-defended fortresses of the Mesozoic. Nodosaurids have no tail club, have medium-to-long spines, and bumpy or smooth heads which are long and not very broad. The big difference is that most ankylosaurids (except the "polacanthines") have bony clubs at the end of their tails, which nodosaurids lack. Ankylosaurids are famous for their tail clubs: the last vertebrae in their tail overlap to form a rigid ‘handle’ that ends with a mass of fused osteoderms akin to a club. They Have Narrow Bodies While The Latter Show Wider Ones C. They Have Terminal Tail Clubs While The Latter Had Parasagittal Spines. There are two basic families of armored dinosaurs in these regions Ankylosauridae and Nodosauridae. Nodosaurids in Detail. Ankylosaurids are the brutes with big tail clubs.
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