Context: A carnivore meaning 'meat eater' (Latin, "caro" meaning 'meat' or 'flesh' and "vorare" meaning 'to devour') is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of animal tissue, whether through predation or scavenging. Animals that depend solely on animal flesh for their nutrient requirements are called obligate carnivores while those that also consume non-animal food are called facultative carnivores. Omnivores also consume both animal and non-animal food, and apart from the more general definition, there is no clearly defined ratio of plant to animal material that would distinguish a facultative carnivore from an omnivore. A carnivore that sits at the top of the food chain is termed an apex predator., The Permian is a geologic period and system which spans 46.7 million years from the end of the Carboniferous Period million years ago (Mya), to the beginning of the Triassic Period 252.2 Mya. It is the last period of the Paleozoic Era; the following Triassic Period belongs to the Mesozoic Era. The concept of the Permian was introduced in 1841 by geologist Sir Roderick Murchison, who named it after the city of Perm., Venaticosuchus is a genus of Late Triassic quadrupedal crurotarsan archosaur. It was a medium-sized predator, reaching up to 2 m (7 ft) in length. Originally it was thought to be the ancestor to the carnosaur dinosaurs (which then included "Tyrannosaurus"); however, now it is known to be more closely related to crocodilians than dinosaurs. It was a carnivore., The Triassic is a geologic period and system which spans 50.9 million years from the end of the Permian Period million years ago (Mya), to the beginning of the Jurassic Period Mya. The Triassic is the first period of the Mesozoic Era. Both the start and end of the period are marked by major extinction events. The Triassic was named in 1834 by Friedrich von Alberti, after the three distinct rock layers ("tri" meaning "three") that are found throughout Germany and northwestern Europered beds, capped by marine limestone, followed by a series of terrestrial mud- and sandstonescalled the "Trias"., Archosaurs are a group of diapsid amniotes whose living representatives consist of birds and crocodilians. This group also includes all extinct non-avian dinosaurs, extinct crocodilian relatives, and pterosaurs. Archosauria, the archosaur clade, is a crown group that includes the most recent common ancestor of living birds and crocodilians. It includes two main clades: Pseudosuchia, which includes crocodilians and their extinct relatives, and Ornithosuchia, which includes birds and their extinct relatives (such as non-avian dinosaurs and pterosaurs)., Allosaurus is a genus of large theropod dinosaur that lived 155 to 150 million 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., The Los Colorados Formation is a sedimentary rock formation found in La Rioja, Argentina. It has a Norian age (Upper Triassic), and is notable for its fossils of early dinosaurs, including the coelophysoid "Zupaysaurus" and the "prosauropods" "Coloradisaurus", "Lessemsaurus", and "Riojasaurus". Magnetostratigraphic analysis suggests that the Los Colorados Formation was deposited between 227 and 213 million years ago., Germany, officially the Federal Republic of Germany, is a federal parliamentary republic in central-western Europe. It includes 16 constituent states, covers an area of , and has a largely temperate seasonal climate. With about 82 million inhabitants, Germany is the most populous member state of the European Union. After the United States, it is the second most popular immigration destination in the world. Germany's capital and largest metropolis is Berlin. Other major cities include Hamburg, Munich, Cologne, Frankfurt, Stuttgart and Düsseldorf., Tyrannosaurus (or , meaning "tyrant lizard", from the Ancient Greek "tyrannos" (), "tyrant", and "sauros" (), "lizard") is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex ("rex" meaning "king" in Latin), is one of the most well-represented of the large theropods. "Tyrannosaurus" lived throughout what is now western North America, on what was then an island continent known as Laramidia. "Tyrannosaurus" had a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the Maastrichtian age of the upper Cretaceous Period, 68 to 66 million years ago. It was the last known member of the tyrannosaurids, and among the last non-avian dinosaurs to exist before the CretaceousPaleogene extinction event., Ornithosuchus (meaning "bird crocodile") is an extinct genus of pseudosuchians from the Late Triassic (Carnian) Lossiemouth Sandstone of Scotland. It was originally thought to be the ancestor to the carnosaurian dinosaurs (such as "Allosaurus"). However, it is now known to be more closely related to crocodilians than to dinosaurs., Pseudosuchia ("false crocodiles") is one of two major divisions of Archosauria and includes living crocodilians and all archosaurs more closely related to crocodilians than to birds (what are often called "crocodilian-line archosaurs"). The name was originally given to a group of superficially crocodile-like prehistoric reptiles from the Triassic period, but fell out of use in the late 20th century, especially after the name Crurotarsi was established in 1990 to label the clade (evolutionary grouping) of archosaurs encompassing most reptiles previously identified as pseudosuchians. By this time, Pseudosuchia had also been defined as a clade, but it was not widely embraced until 2011, when paleontologist Sterling Nesbitt proposed that Crurotarsi, as it was originally defined, must include not only crocodilian-line archosaurs, but all other archosaurs including birds, non-avian dinosaurs, and pterosaurs. The clade Pseudosuchia as originally defined could still be used to identify crocodilian-line archosaurs, and since many recent studies support Nesbitt's findings, Pseudosuchia is now commonly used., 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., Riojasuchus is an extinct genus of quadrupedal crurotarsan archosaur. "Riojasuchus" is a member of Ornithosuchidae, a family of facultatively bipedal carnivores that were geographically widespread during the Late Triassic. Two other genera, "Ornithosuchus" and "Venaticosuchus", are currently known. The holotype specimen is PVL 3827. It was found in the Los Colorados Formation., The Crocodilia (or Crocodylia) are an order of mostly large, predatory, semiaquatic reptiles. They appeared 83.5 million years ago in the Late Cretaceous period (Campanian stage) and are the closest living relatives of birds, as the two groups are the only known survivors of the Archosauria. Members of the order's total group, the clade Pseudosuchia, appeared about 250 million years ago in the Early Triassic period, and diversified during the Mesozoic era. The order Crocodilia includes the true crocodiles (family Crocodylidae), the alligators and caimans (family Alligatoridae), and the gharial and false gharial (family Gavialidae). Although the term 'crocodiles' is sometimes used to refer to all of these, a less ambiguous vernacular term for this group is crocodilians., Ornithosuchidae is an extinct family of reptiles from the Triassic period that were distantly related to crocodilians . They are classified as crurotarsan archosaurs . Ornithosuchids were quadrupedal and facultatively bipedal , meaning they had the ability to walk on two legs for short periods of time . They have distinctive downturned snouts and uniquely shaped ankle bones that distinguish them from other archosaurs . Ornithosuchids were geographically widespread during the Carnian and Norian stages of the Late Triassic . Three genera , Ornithosuchus , Venaticosuchus and Riojasuchus are presently known . The family was first erected by German paleontologist Friedrich von Huene in 1914 ., The Jurassic (from Jura Mountains) is a geologic period and system that spans 56.3 million years from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period Mya. The Jurassic constitutes the middle period of the Mesozoic Era, also known as the Age of Reptiles. The start of the period is marked by the major TriassicJurassic extinction event. Two other extinction events occurred during the period: the Pliensbachian/Toarcian event in the Early Jurassic, and the Tithonian event at the end; however, neither event ranks among the "Big Five" mass extinctions., Subject: ornithosuchidae, Relation: parent_taxon, Options: (A) alligatoridae (B) animal (C) archosaur (D) area (E) bird (F) crocodile (G) crocodilia (H) crurotarsi (I) diapsid (J) dinosaur (K) gavialidae (L) la (M) lizard (N) mya (O) ornithosuchidae (P) pseudosuchia
Output: crurotarsi