المواضيع

 Andrewsarchus

Andrewsarchus is a carnivorous mammal from the Eocene period (45 to 36 million years ago), which inhabited Central Asia. It had a large snout and sharp, flat teeth that it probably used to crush bones. However, Andrewsarchus is only known from a single skull, so its age and diet (whether it was a predator or a scavenger) are still debated today.

Andrewsarchus was named after the great paleontologist Roy Chapman Andrews, which means "Andrew's monster". The animal was originally discovered from a single skull found by the scientist, Chen Bao (a member of the Third Asian Andrew Expedition) in June 1923, at a site in the Gobi Desert in Mongolia known as "Erden Mana". The skull is now on display at the American Museum of Natural History in New York City, where the museum funded the expedition that found it, but the skull lacks a lower jaw, which was not found during the search.


Appearance and composition

Andrewsarchus is only known from a single skull measuring 83 centimeters long by 56 centimeters wide, and a few small pieces of bone. Andrewsarchus was a very large animal, with an estimated length of 3.4 meters from the front of its face to the end of its tail, and a height of 6 meters from the ground to the shoulder. As for his skull, its length is twice the length of the skull of the modern Alaskan brown bear, and three times the length of the skull of the gray wolf. It may be the largest carnivorous mammal living on land in history. However, its main competitor for this title is the Archotetherium (South American short-faced bear), which is estimated to weigh 1,700 kilograms. Considering that modern brown and polar bears range in weight from 450 to 675 kilograms, while gray wolves weigh barely 77 kilograms, the weight of Anarosarchus compared to the size of its skull for them may have been about 1,

Andrewsarchus had a long, large face, and had very strong, razor-sharp teeth with flat cheeks, which are thought to have been used to crush bones. It is considered a powerful predator, as it is believed to have hunted titanothers and other large animals. Androsarchus is also a scavenger of animal carcasses. Among the controversial issues about this mammal is the cause of its extinction, the cause and why its bones disappeared, and why until now there has not been a complete fossil for it until this time for this huge predator. These puzzling questions haunt scientists and researchers and form a form of helplessness for them, but with the passage of time it has become largely forgotten.


biological properties

The appearance and behavior of Andrewsarchus are virtually unknown, and have been a matter of debate among paleoanthropologists since its discovery. All that is now known about Andrewsarchus came from a single meter-long skull from the late Eocene, unearthed in what is today Mongolia. Recent theories suggest that this mammal's teeth may have been dull (blunt), a trait unsuitable for predatory predators, so it may have actually been more omnivorous than carnivorous, feeding on things like carrion, bones, plant roots, and molluscs. In this case, he may have taken advantage of his enormous size to drive away predators and other small rubbish, and isolate himself with carrion. But until other fossil evidence becomes available, all theories and reconstructions of Andrewsarchus remain more speculative than true conclusions.

Andrewsarchus had massive, powerful jaws, perhaps the strongest of all land mammals known to history, and they could pierce and crush large bones when needed. Given the size of its jaws and the discovery of its fossil in a coastal area, it may have subsisted on the carcasses of primitive whales, oysters and hard-shelled turtles that died on the beach, and perhaps on a number of other large mammals contemporary to it, as many large mammals developed in the Central Asian region during the late Eocene.

But despite its massive teeth and massive jaws, Andrewsarchus had no teeth for slicing flesh and bone. Given the size of the animal, it is most likely that it was eating large animals such as the ancient titanotheria, which were among the largest herbivores in its era, and it may have depended in parallel on hunting them or on feeding on their already caught carrion. And if Andrewsarchus also ate plants, then perhaps its diet was similar to that of Entelodonts.

تعليقات
ليست هناك تعليقات
إرسال تعليق



    وضع القراءة :
    حجم الخط
    +
    16
    -
    تباعد السطور
    +
    2
    -