埃及棘龙英文简介
埃及棘龙,是一种兽脚亚目恐龙，生存于白垩纪的非洲，约为11200万年前到6500万年前，下面是学习啦小编为你整理的埃及棘龙英文简介，希望对你有用!
埃及棘龙简介
The Egyptian spine (S.aegyptiacus) means "spiked lizards", a beast-like dinosaur, living in the Cretaceous Africa, about 11.2 million years ago to 65 million years ago. The spine was originally discovered in 1912 by the paleontologist Ernst Stromer in Egypt and was described in 1915. The initial specimens were destroyed during the Second World War, but in recent years found other fossils of the skull, claws, arms, caudal vertebrae, crown and other body parts.
The spine of the back of the spine has obvious long spines, which are made up of the nerve spines of the vertebrae, up to 2 meters in length, and the long spines are inferred from the skin to form a huge sail; but some scientists think that these long spines Is covered by muscle, the formation of breast or back. There are several views on the function of this sail, including the regulation of body temperature, visual display. Spine dragon's skull length is wider but shorter, similar to the shape of the dragon, spine dragon is considered to be medium-sized birds and wild sauropods dinosaurs and fish for food. A study of the oxygen isotopic composition of the teeth of the rattan family, suggesting that the spines are terrestrial animals, but often inhabit the waters, similar to modern hippos. According to the recent estimates, the spines are currently known as the largest carnivorous dinosaurs, larger than Rex Tyrannosaurus, These projections show that the rat sprouts length of 12-19 meters, hip height of 2.7 to 4.8 meters, weighing 4-18 tons.
埃及棘龙分类
The name of the spiny dragon family comes from the genus Acanthus, the spine dragon branch can be divided into heavy claw dragon subfamily, spiny dragon subfamily. Heavy claw dragon subfamily contains: European heavy claw dragon, Niger-like crocodile dragon and ridge ornaments dragon and Laos fish hunting dragon, there are only broken fossils of the crocodile dragon (UK). Sparrow subfamily also includes: African spine dragon, Brazilian dragon and Oshara dragon, Thailand's Siam dragon and China's Chinese dragon (the latter two are now only found very broken fossils); In addition, there are foundation Spider Dragon Branch East African Dragon. Spinosaurus and Olsala dragon's closest relationship, both belong to the spine dragon subfamily, have a straight, no jagged teeth, teeth wide distance, spine dragon on each side of the maxilla has 12 teeth; Subfamily has a curved, serrated teeth, the number of teeth more, each side of the maxilla about 30 teeth. In addition, all members of the spiny dragon Branch has a sharp large finger claws, ranging from 20-60 cm in length.
In 2003, Oliver Rauhut proposed that the sporadic model was a chimera, and the spine was derived from a shark-like dinosaur, In the similar heavy claws of the large animal foot class dinosaurs. However, this argument has been denied by recent research.
埃及棘龙相关研究
Since the spines were found, they became one of the longest and most important candidates for the dinosaurs, but the general public had no concept for the huge size of the spines, until the spines appeared in the 2001 film "Jurassic Park III "(Jurassic Park III), and 2005 for their new specimens of the narrative. (Friedrich von Huene) and decades later Donald F. Glut (Donald F. Glut) are in their study, the spine will be listed as one of the greatest sacrificial dinosaurs; Egyptian spines Long body length of 16-19 meters, weighing 16-20 tons. In 1988, Gregory Paul (Gregory S. Paul) also listed the longest animal foot dinosaurs; the same length is described as 15 meters. Now, according to the estimates of the new specimens, the length of the spine is estimated at 16 to 17 meters and the body weight is 12 to 16 metric tons. At least one unpublished survey showed that the weight of the rattan was 20 tons; the data were based on the estimated length of 18 meters, and the largest vertebral bone (21 cm) in the prototype specimen was compared with the largest vertebrae Get it. Because the prototype specimens are derived from the unfinished spine dragon individual, which means that their great body, and the unknown size limit. However, a small number of researchers lowered the data, close to the size of the body proposed by Cristiano Arrow Sasso and others (the reason is unknown, it is likely to try to reach the public can accept the data) The
François Therrien and Donald Henderson in a recent study based on skull length to calculate the proportion of the estimated data before the estimated length is too long, and the weight is too light. They are estimated to be 12.6 to 14.3 meters in length and 4 to 16 metric tons of body weight. But their research has been criticized because of their choice of large-scale animal-like control group, as well as their establishment of the spine dragon skull; most of the large-scale animal foot class is Tyrannosaurus and meat dinosaurs as a benchmark Point, and they have different physique with the spinosaurae dinosaurs. September 2014 More complete fossil discoveries basically ended these controversies about the body, especially the previously found arm, calf, thigh, pelvis.
埃及棘龙英文简介相关文章：
1.棘龙的铅笔画图片
