How Can We Reconstruct Ancient Animals?
To reconstruct ancient animals, we first need to have skull fossils and understand the general structure of the skull muscles. Based on the limb bone fossils of animals, paleontologists can only determine their approximate length and thickness, but they cannot know their exact appearance. However, with skull fossils, the situation is completely different. Australopithecus, Homo erectus, Homo sapiens, and modern humans all belong to the human species, but their skull structures vary greatly. For example, the Nanjing Tangshan Man had a higher nose bridge than the Beijing Man. Similarly, although there are many types of reptiles, we can determine whether they are turtles, snakes, or dinosaurs based on whether they have temporal fenestrae and whether the temporal fenestrae are located above or below, and whether there are one or two of them. Tooth fossils are also very important. Based on the teeth, we can roughly determine the type of animal it belonged to. For example, the well-known Yuanmou Man in Yunnan was identified based on two incisors, but without a skull, no one knows what he looked like. Many animal skulls are composed of many bone fragments, and the skull fossils found are often incomplete. Some of these bone fragments are important for reconstruction, while others are less so, so the accuracy of the reconstruction also depends on the availability of the bone fragments. In addition to the skull, if we want to reconstruct a complete animal, other skeletal bones, such as limb bones, are also needed, especially when reconstructing new species. Of course, whether it's the skull, teeth, or limb bones, paleontologists need to conduct detailed research to obtain as much information as possible about the living habits of these ancient animals. The more accurate the research conclusions are, the more reliable the reconstruction will be.
Fossil repair requires great patience. The more carefully the fossil is repaired, the more detailed the structural details will be, and the more accurate the reconstruction of the animal will be.