@Maier09 2 November 2022 more from that month

Since its discovery, Spinosaurus has been one of the largest dinosaurs. Both Friedrich von Huene in 1926 and Donald F. Glut in 1982 mentioned the fact that it is one of the most massive dinosaurs, having a length of 15m and a weight from 6-7 tons to over 20 tons. In 1988, Grigore Pavel mentioned that it is indeed the longest theropod that has a length of 15m, but regarding the weight, he stated that Spinosaurus weighs approximately 4 tons. In a paper in 2007 Francois Therrien and Donald Henderson using scaling based on the length of the skull challenged all previous estimates saying that the length is also the weight too low. Based on the estimated length of the skull of 1.5 to 1.75m, their estimates reach 12.6 - 14.5m related to a body mass of 12 - 20 tons. Estimates that make Spinosaurus smaller and lighter than Carcharodontosaurus and Gigantosaurus. These estimates have been contested for the choice of comparison fossils. In order to improve the precision regarding the dimensions, it is necessary to discover the bones completely or as accurately as possible. Currently, the bones of the limbs are not discovered.