All carnivorous dinosaurs, large and small, were members of the theopod suborder Lizards.
American paleontologist Ossenel Chloes Marsh coined the term "theropod suborder" to distinguish carnivorous dinosaurs from a variety of plant-eating dinosaurs. Marsh explained that the word "beast" did not refer to any beast, but to "carnivorous beast."
Ben Kasler, an expert on the roots of dinosaur names, also explains this fact. According to Kasler, Marsh used the name to allude to "carnivorous beasts" in order to highlight a characteristic feature of carnivorous dinosaurs, the three-clawed foot similar to that of modern carnivorous birds. Some scientists believe that living birds are descendants of this family of dinosaurs.
<h1 class= "pgc-h-arrow-right" > subfamily of theropod dinosaurs</h1>
With the deepening of the understanding of the diversity and shape characteristics of theropod suborder in recent years, the scientific classification method of theropod suborder is also constantly updated. Prior to the 1980s, the traditional classification of theropod suborder was based primarily on size and divided into two categories:
One is the smaller, lighter-weight bonyosaurs such as coelentosaurs and ornithosaurs. They were carnivores, and their size grew only slightly over the long years of the Mesozoic Era.
Dracopods
The other was a large carnivorous dragon like Allosaurus and Tyrannosaurus rex. They can weigh up to several tons and lengths up to 12 meters.
tyrannosaurus
Over the past 20 years, the number of dinosaur fossils unearthed has exploded, and the theropods have added many new members, giving us more fossil samples of known types of theropods. More fossils mean we know more about the traits unique to each theropod dinosaur. Through order analysis, paleontologists have devised their own methods of defining the evolutionary relationships of theropod suborders.
While there will be great divergences between these schemes for the classification of certain dinosaurs, paleontologists have formed a lot of agreement on the higher evolutionary clades of carnivorous dinosaurs.
<h1 class = "pgc-h-arrow-right" > features of theropod dinosaurs</h1>
About 40% of all known dinosaur taxa belong to the theropod suborder, and the most basic member of this evolutionary branch was the first dinosaurs to appear on Earth. Featherless theropod dinosaurs were also the last to disappear, and they were the victors of the entire dinosaur era. They disappeared and survived the feathered theropod dinosaurs, birds.
The remains of theropod dinosaurs have been found on every continent of the planet. Theropod dinosaurs vary in size, from small to chicken-sized solitary dinosaurs, to giant tyrannosaurs, southern megalopods and other giant beasts, and in between there are many kinds of the most common bipedal carnivorous dinosaurs. Theropods share common anatomical features, many of which are related to the driving force behind their survival: the discovery, attack, and consumption of other animals.
Clues to the predatory habits of the theropod suborder are found in its skull. The theropod suborder has a light skull and some loose connections to the bones, a structure that allows it to flexibly absorb the vibrations of its body from its prey and subdue writhing prey.
Their jaws are more robust, especially the lower jaw, which consists of several bones, including the dental bones that support the teeth. A primitive feature of the jaws of Herrera in the base sauropod order was that there was a joint in the lower jaw that allowed the chin to slide back and forth, allowing Herrera to clench its teeth. Many later theropods, including Allosaurus, have similar sliding joints in the jaws of the suborder Theropods.
The skulls of the theropod suborder vary in shape and size, and were formed to accommodate the consumption of a certain prey. The jaws have a strong bite force and a large head, which is a common feature of dinosaurs that fed on other large animals. Predators, who may feed on insects and other small animals, have small skulls that resemble the heads of birds. Theropod suborder has large holes in the skull that reduce the weight of the skull, and the orbit is also large. All this indicates that the theropod suborder has excellent vision, which is convenient for finding and tracking prey.
Keen vision is in fact an adaptation of predators that naturally develops, and some theropods have extraordinarily large eyes. Herbivorous dinosaurs have a pair of small eyes on both sides of their heads, allowing them to see the movements around them at a glance when predators are infested, while the eyes of theropods such as theodondaurus are facing forward like humans, and the vision can overlap and have a three-dimensional sense. The ability to focus both eyes on prey greatly improves the predator's ability to hunt with agility and adept at dodging prey.
< h1 class = "pgc-h-arrow-right" > the teeth that subdue prey</h1>
Most theropods have serrated teeth full of sharp blades. The largest Tyrannosaurus rex had sturdy teeth, the size of a banana, and could crush bones. Such teeth are the limit of the tooth construction of the highly evolved theropod dinosaurs. For Tyrannosaurus rex with short arms, the head and jaw became their main tools in fighting their prey. The oversized head, strong teeth, strong neck, and special jaw structure suggest that the Tyrannosaurus rex may have been ambushed, with its jaws thrown apart to guess the object.
Most other theropod dinosaurs had teeth that were not as strong as those of a dragon, but sharper, and with such teeth they could cut through their prey as soon as they controlled them. This is evident in dinosaurs, velociraptors, and other predators of the genus Chironae that are similar in size to dogs and are agile.
The teeth of the family Chironidae are small, jagged, and can be loosened violently when the prey resists vigorously. When chasing prey, the Chilong family did not rely on its teeth, but used its sickle-like claws and front paws to beat the prey and bring it to its knees; They may also use their claws to hook their prey and drag it closer to eat. When the prey was almost tossed and there was no longer the strength to resist, the teeth of the chilong came in handy.
Most theropod suborders have long, somewhat stiff tails, which improves their body balance at the start. The running theropod suborder is likely to be like this: the body leans forward, with the hip area as a fulcrum, the head extends forward, and the tail extends backwards to maintain both balance of the body and effective forward movement. The running theropods, like the cyclists, apply the weight of their bodies to the drooping handlebars to maintain balance and use their physical strength on pedaling the bike.
<h1 class="pgc-h-arrow-right" > concluding remarks:</h1>
Most of the carnivorous dinosaurs we found are almost all members of this family, they are currently the largest known terrestrial carnivores, especially the tyrannosaurus rex in the theropod suborder dinosaurs, also called Tyrannosaurus rex, they became carnivorous dinosaur image representatives, appeared in various science fiction film and television works, this dinosaur length can reach 12-13 meters, if this dinosaur is still alive, you can easily bite off the neck of an elephant, Tyrannosaurus rex until the Cretaceous mass extinction disappeared, is a very successful carnivorous animal.