Q:Information: - Shunosaurus, meaning "Shu Lizard", is a genus of sauropod dinosaur from Middle Jurassic (BathonianCallovian) beds in Sichuan Province in China, 170million years ago. The name derives from "Shu", an ancient name for the Sichuan province. - Brachiosaurus is a genus of sauropod dinosaur from the Jurassic Morrison Formation of North America. It was first described by Elmer S. Riggs in 1903 from fossils found in the Grand River Canyon (now Colorado River) of western Colorado, in the United States. Riggs named the dinosaur "Brachiosaurus altithorax", declaring it "the largest known dinosaur". "Brachiosaurus" had a disproportionately long neck, small skull, and large overall size, all of which are typical for sauropods. However, the proportions of "Brachiosaurus" are unlike most sauropods the forelimbs were longer than the hindlimbs, which resulted in a steeply inclined trunk, and its tail was shorter in proportion to its neck than other sauropods of the Jurassic. - Stegosaurus is a genus of armored dinosaur. Their fossil bones have been found in rocks dated to the Late Jurassic period (Kimmeridgian to early Tithonian ages), between 155 and 150million years ago, in the western United States and Portugal. Several species have been classified in the upper Morrison Formation of the western U.S, though only three are universally recognized; S. stenops, S. ungulatus and S. sulcatus. The remains of over 80 individual animals of this genus have been found. "Stegosaurus" would have lived alongside dinosaurs such as "Apatosaurus", "Diplodocus", "Brachiosaurus", "Allosaurus", and "Ceratosaurus"; the latter two may have been predators of it. - Xiaosaurus ("dawn lizard"), is a genus of small herbivorous dinosaur from the middle Jurassic, approximately 169 to 163mya. "Xiaosaurus" lived in what is now the Sichuan Basin of China. - In the geological timescale the Tithonian is the latest age of the Late Jurassic epoch or the uppermost stage of the Upper Jurassic series. It spans the time between 152.1 4 Ma and 145.0 4 Ma (million years ago). It is preceded by the Kimmeridgian and followed by the Berriasian stage (part of the Cretaceous). - Stegosauridae is a group of armored dinosaurs comprising all species more closely related to Stegosaurus than to Huayangosaurus . Their fossil range extends into the early Cretaceous period , exceeding that of other stegosaurians , such as the huayangosaurids , which had died out by the end of the Jurassic . Stegosaurids are characterized by rows of plate - like osteoderms arranged vertically along the neck , body , and tail , which graded with varying abruptness into a series of spikes . These may have had a number of uses : display and / or thermoregulation are likely functions for the plates , while evidence suggests that the spikes were used at least partly for defense . - Ornithopods or members of the clade Ornithopoda (or ) are a group of ornithischian dinosaurs that started out as small, bipedal running grazers, and grew in size and numbers until they became one of the most successful groups of herbivores in the Cretaceous world, and dominated the North American landscape. Their major evolutionary advantage was the progressive development of a chewing apparatus that became the most sophisticated ever developed by a non-avian dinosaur, rivaling that of modern mammals such as the domestic cow. They reached their apex in the duck-bills (hadrosaurs), before they were wiped out by the CretaceousPaleogene extinction event along with all other non-avian dinosaurs. Members are known from all seven continents, though they are generally rare in the Southern Hemisphere. - Huayangosaurus is a genus of stegosaurian dinosaur from the Middle Jurassic of China. The name derives from "Huayang" (), an alternate name for Sichuan (the province where it was discovered), and "saurus", meaning "lizard". It lived during the Bathonian to Callovian stages, around 165 million years ago, some 20 million years before its famous relative, "Stegosaurus" appeared in North America. At only 4.5 metres long, it was also much smaller than its famous cousin. Found in the Lower Shaximiao Formation, "Huayangosaurus" shared the local Middle Jurassic landscape with the sauropods "Shunosaurus", "Datousaurus", "Omeisaurus" and "Protognathosaurus", the ornithopod "Xiaosaurus" and the carnivorous "Gasosaurus". It was found in Huayang in China. - Omeisaurus (meaning "Omei lizard") is a genus of sauropod dinosaur from the Middle Jurassic Period (Bathonian-Callovian stage) of what is now China. Its name comes from Mount Emei, where it was discovered in the lower Shaximiao Formation of Sichuan Province. - Allosaurus is a genus of large theropod dinosaur that lived 155 to 150million years ago during the late Jurassic period (Kimmeridgian to early Tithonian). The name ""Allosaurus"" means "different lizard". It is derived from the Greek /"allos" ("different, other") and /"sauros" ("lizard / generic reptile"). The first fossil remains that can definitely be ascribed to this genus were described in 1877 by paleontologist Othniel Charles Marsh, and it became known as "Antrodemus". As one of the first well-known theropod dinosaurs, it has long attracted attention outside of paleontological circles. Indeed, it has been a top feature in several films and documentaries about prehistoric life. - Diplodocus (, or ) is an extinct genus of diplodocid sauropod dinosaurs whose fossils were first discovered in 1877 by S. W. Williston. The generic name, coined by Othniel Charles Marsh in 1878, is a neo-Latin term derived from Greek ("diplos") "double" and (dokos) "beam", in reference to its double-beamed chevron bones located in the underside of the tail. Chevron bones of this particular form were initially believed to be unique to "Diplodocus"; however, since then they have been discovered in other members of the diplodocid family as well as in nondiplodocid sauropods, such as "Mamenchisaurus". It is now common scientific opinion that "Seismosaurus hallorum" is a species of "Diplodocus". - Protognathosaurus (meaning "early jaw lizard") is a genus of herbivorous dinosaur from the Middle Jurassic. It was a sauropod found at Dashanpu in Sichuan in what is present-day China. - Dinosaurs are a diverse group of animals of the clade Dinosauria that first appeared during the Triassic. Although the exact origin and timing of the evolution of dinosaurs is the subject of active research, the current scientific consensus places their origin between 231 and 243 million years ago. They became the dominant terrestrial vertebrates after the TriassicJurassic extinction event 201 million years ago. Their dominance continued through the Jurassic and Cretaceous periods and ended when the CretaceousPaleogene extinction event led to the extinction of most dinosaur groups 66 million years ago. - In the geologic timescale, the Kimmeridgian is an age or stage in the Late or Upper Jurassic epoch or series. It spans the time between 157.3 1.0 Ma and 152.1 0.9 Ma (million years ago). The Kimmeridgian follows the Oxfordian and precedes the Tithonian. - Apatosaurus (meaning "deceptive lizard") is a genus of extinct sauropod dinosaurs that lived in North America during the Late Jurassic period. Othniel Charles Marsh described and named the first-known species, A. ajax in 1877, and a second species, A. louisae, was discovered and named by William H. Holland in 1916. They lived about 152 to 151 million years ago (mya), during the early Tithonian age, and are now known from fossils in the Morrison Formation of modern-day Colorado, Oklahoma, and Utah, in the United States. "Apatosaurus" had an average length of , and an average mass of . A few specimens indicate a maximum length of 1130% greater than average and a mass of . - A genus (genera) is a taxonomic rank used in the biological classification of living and fossil organisms in biology. In the hierarchy of biological classification, genus comes above species and below family. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. Given the information, choose the subject and object entities that have the relation of 'taxon rank'.
A:
stegosauridae , family