Can fossils tell if a dinosaur was male or female? Hard

BEIJING, May 14 (Xinhua) — The difference between male and female dinosaurs is so small that archaeologists have difficulty distinguishing the dinosaur’s sex from bone fossils, according tomedia reports. British researchers analyzed fossils of the head of modern Ganges crocodiles, an endangered large crocodile species that looked at the skeletal structure of ganges to see the difference skew between males and females in dinosaurs.

Can fossils tell if a dinosaur was male or female? Hard

The Ganges alligator, which is 6 meters long and weighs 250 pounds, is known as a “living dinosaur fossil” and there is no significant difference between males and females except for a bone hole in its skull, which means it is difficult for archaeologists to distinguish the male sex from bone fossils alone, which is why scientists are cautious in identifying the sex based on dinosaur bone fossils.

The Ganges alligator is very similar to the dinosaur, it is a large, slow-growing, spawning and breeding reptile, the study of this species is a good example of the analysis of extinct dinosaur species. Studies have shown that even though the sex of the Ganges alligator bones was known in advance, it was still difficult to distinguish between their genders when analyzing bone specimens, and for most dinosaurs, current research data were not comprehensive and researchers could not accurately determine the sex of these animals.

The male Ganges alligator is larger than the female, and there is a soft tissue at the end of the mouth, known as “ghara”, which is located in a bone hole near the mouth, called the “nostril nest”, which can be recognized from the skull.

The team studied 106 crocodile specimens in 36 museums around the world and found that only male crocodiles had “nostril nests” and that to determine the clear differences between male and female dinosaurs, larger specimens of a particular species were required for comparison and a certain number of bone specimens. He and his colleagues are now studying the latest study by analyzing crocodile specimens from around the world.

Scientists have long been working on how to distinguish the sex of dinosaurs from bone fossils, and the gender dimorphism of each dinosaur species, and some animals exhibit a high degree of gender dimorphism, which means that in addition to sexual organs, their physical characteristics vary widely, in part to attract mates to mate, for example: male peacocks have bright tail feathers, while female feathers are softer; They have lush mane.

The new study challenges previous research, suggesting gender differences in some dinosaur species, particularly the Tyrannosaurus rex, which has led to greater cognitive biases in the public. Many years ago, a research paper claimed that the female tyrannosaur was larger than the male tyrannosaur, but this was based on the conclusions of 25 incomplete bone specimens, and our current study suggests that the 25 skeletal specimens are too small and that we need more skeletal specimens to fully analyze the gender characteristics of dinosaurs.

For example, “Sophie”, the most complete skeleton specimen of the sword dragon at the Natural History Museum in London, is still unable to determine its true sex, despite the relatively complete skeleton. The latest study is now published in the recent issue of peerJ. (Ye Ding Cheng)