Dinosaurs are extremely abundant prehistoric reptiles that can be classified based on various characteristics. Here are some common dinosaur classifications:
1. Based on pelvic morphology: Dinosaurs can be divided into sauropods and ornithopods. Sauropods have a special pelvic structure, and most of them are herbivorous dinosaurs that walk on four legs, while ornithopods are bipedal dinosaurs, including many herbivorous and carnivorous species.
2. Based on skull structure: Dinosaurs can be divided into theropods and sauropods. Theropods have larger heads and sharper teeth, and they mainly feed on other dinosaurs. Sauropods have relatively small heads and mainly feed on plants.
3. Based on body size: Dinosaurs can be divided into small, medium, large and giant dinosaurs. The largest dinosaurs are the long-necked dinosaurs, which can reach more than 30 meters in length.
In addition, dinosaurs can be divided into three main categories according to the era: Triassic, Jurassic and Cretaceous dinosaurs. Dinosaurs in different periods have different characteristics. For example, the diversity of Jurassic dinosaurs is the highest, and the Cretaceous is the golden age of dinosaur prosperity.
In general, the classification and characteristics of dinosaurs are very rich, including body size, diet, and movement. Each dinosaur has its own unique ecology and evolutionary history.
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