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Top 10 Prehistoric Animal Mysteries: Dinosaurs were not cold-blooded animals
Dinosaurs are neither cold-blooded nor hot-blooded: Recent scientists have found that dinosaurs are a unique reptile, they are neither cold-blooded nor hot-blooded, in fact they are in the middle of the metabolic range, completely different from other organisms. They require fewer calories and calories than mammals of similar size, but are more flexible than other reptiles. Tencent Science News (Yo-Yo/Compilation)
Missing Ichthyosaur Evolution: For many years, scientists have been puzzled by the evolutionary process of Ichthyosaurs, and it is only recently that paleontologists have revealed how and when Ichthyosaurs entered the marine environment, and the key to finding the missing link in the evolution of Ichthyosaurs is Cartorhynchus, an amphibian similar to a seal, whose existence proves that Ichthyosaurs originally lived on land and spent most of their time in water.
Discovery of the oldest dinosaur to date: Previously believed that dinosaurs rose up at the end of the Triassic period and soon proliferated to become the overlords of the earth at that time. However, archaeologists excavated and found a dinosaur species, The Parringtonian Sardosaurus, with a tail length of 1.5 meters, making it the oldest dinosaur species to date. The history of dinosaurs can be traced back 10-15 million years, and it lived with ancient crocodiles and other reptiles in the Middle Triassic period 240 million years ago.
Dinosaurs had chromatic vision and used feathers as a means of communication: Currently, paleontologists have discovered that dinosaurs have a unique ability to see colors, which can detect ultraviolet and short-wave light. In addition to the beautiful colors of the feathers of some dinosaur species, showing courtship to the opposite sex, they will also "shake their hips" like modern birds, swinging their tail feathers, potentially a communication tool.
Ancient camels originated in the Arctic: Scientists have analyzed the collagen of ancient camels and found that they originated in the high-latitude Arctic region. Ancient camel bones were found on Ellesmere Island, where collagen is intact and dates back 3.5 million years. Ancient, fluffy-haired dromedary camels once lived in the coldest and most desolate regions of the planet, eventually migrating across the land bridge that once connected Alaska to Russia and migrating to warmer climates in the south.
Ancient animal "public toilets": Some herbivorous mammals know how to use "public toilets", mainly due to factors such as social habitation and hygiene, which will make predators realize that they live together in large numbers. Excavations inside Argentina have uncovered a fossilized feces that shows that mammalian ancestors also liked to use designated toilets, including vegetarian species such as the massive rhinoceros.
Mammalian ancestors hibernated to escape extinction: A mammalian ancestor was a species similar to the modern Falkland hedgehog, which has changed little in evolutionary history. Known as a living fossil of a vertebrate, the Ejima hedgehog is most notably characterized by its long hibernation time, its ability to enter a metabolic quiescent state, its lower body temperature, and its hibernation three-quarters of the year. Scientists speculate that this ancient mammal, which resembles the Horse Island hedgehog, could hibernate through species extinction.
Fossilized dragon eggs suggest that dinosaurs hatched eggs sitting: The recent discovery of some strange fossils of dinosaur eggs suggests that at least some dinosaur species hatched eggs while sitting, very similar to some birds today.
Unveiling the mystery of dinosaurs: 50 years ago, scientists found two fossils of the forelimbs of dinosaurs, and at that time, based on the structure of the claws, it was initially inferred that it was a terrible carnivorous dinosaur. But later studies showed that in fact, dinosaurs were not terrible, but a clumsy, unresponsive dinosaur, it weighed 6 tons, body length of 11 meters, the back of the sail-like structure, they ate not to bite and chew, but to suck food into the mouth, and was a herbivores.
Dinosaurs did not have fleas on their bodies: Scientists had previously thought that dinosaurs had fleas on their bodies, so they targeted "strashilids" and believed that the pincer-like leg features of this fleas were used to grip the parasite. The latest research suggests that strashilids are actually an aquatic or amphibian fly whose pincer-like legs are used to grip their mates to complete mating. Males have abdominal breathing gills and may be good at flying.