The term spinosaurus literally means ” thorny dinosaur “. This appellation was chosen because the first discovered dinosaur of this family (Spinosaurus) had a crest full of large thorns on its back.
All spinosaurs were carnivores and had a long, sharp snout similar to that of crocodiles. It also had powerful dentures, formed by conical and pointed teeth like those of dolphins.
These saurians fed on other animals, becoming expert fishermen who used their powerful claws as a harpoon wire to catch fish. Spinosaurus
The main species
– Irritator Challengeri: It had a wingspan of 7 to 8 meters and lived 110 million years ago. It received this name thanks to its discoverer, Professor Challenger. The other part of the name came up when researchers were irritated when they realized that the fossil purchased from this species had been recomposed and stuck with other fossils.
– Spinosaurus: this species is characterized by its long and highly developed skeleton , reaching more than one meter of neural spine. It reached 5 meters in length and lived in an ecosystem of leafy vegetation 100 million years ago. Spinosaurus
– Siamosaurus: adopts the name of “the lizard of Siam”. It was discovered in present-day Thailand in some Cretaceous-era deposits. Little is known about this species, but it is known that they shared conical teeth and had a strong resemblance to Spinosaurus.
– Cristatusaurus: members of this species were the largest of the family and reached 10 meters in length. Its fossils were found in West Africa and are known to have lived some 110 million years ago. Its name is a matter of controversy due to its numerous similarities to other species. Spinosaurus
A two-step extinction
The scientific community agrees when it is stipulated that the main cause of extinction of the dinosaurs was the collision of a meteorite with the Earth. This caused, among other effects, a large cloud of ash that did not allow the entry of sunlight, causing a drastic drop in temperatures. These climate changes triggered the gradual extinction of the great saurians.
This particular family of dinosaurs was discovered in the early 20th century and its fossils found were destroyed by the effects of wars in Europe, almost completely eliminating any fossil remains of this family.