The mesmerizing world of dinosaurs has captured the imaginations of people across generations. These colossal creatures, which once roamed the Earth during the Mesozoic Era, come in a staggering array of shapes, sizes, and adaptations. In this comprehensive exploration, we will embark on a journey through time, delving into the various types of dinosaurs that have left an indelible mark on our understanding of prehistoric life. I. Saurischia: The Lizard-Hipped Dinosaurs A. Theropods: The Predators of the Mesozoic Theropods, characterized by their lizard-like hips, were a diverse group of carnivorous dinosaurs that ruled the land during the Mesozoic Era. Among the most iconic members of this group was the fearsome Tyrannosaurus rex. With its massive size, powerful jaws, and tiny arms, T. rex was a formidable predator, dominating the Late Cretaceous period. Another notable theropod is Velociraptor, famed for its agility and intelligence. Contrary to its portrayal in popular media, Veloci
by Claudia Mann
Jurassic Park 3 made Spinosaurus famous: Spinosaur was the ferocious star of the film! But we all know that films take great liberty with the truth, so let's see what paleontologists can tell us about the real Spinosaur.
How Big Is Big?
How huge? Scientist estimate spinosaurus to be 40 to 56 feet or 12 to 17 meters from head to tail. Spinosaurus' body looks a lot like that of T-Rex, but there are a couple of obvious differences. Of course, T-Rex didn't carry that large sail-like fins made of 6-foot spines. And the front arms of the spinosaurus are heavier and longer than T-Rex's arms. Some scientists think this means that spinosaurus used them for walking, while others say these strong front arms could really get a grip on dinner. The head of spinosaur was longer, more narrow, and not as heavily built as that of T-Rex.
What About The Spines?
Whoever named this beast wasn't having the most creative day. Spinosaurus means "spiny lizard." There were large spines extending from the vertebrae along its back. And when I say large, I mean they could grow up to 6 feet long! Most researchers believe that the spines were covered with a membrane of skin that filled in the spaces between the spines, sort of the way webbing fills in the spaces between the "toes" of a duck This made a sail-like fin that could have helped control body heat. Some researchers think that the sail could have been extended or collapsed at least to some extent. Perhaps then the sail could be used get some other dino's attention.
The First Spinosaur
Spinosaurus was discovered in 1912 by a German paleontologist. Ernst Stromer found the first and most complete specimen in Egypt. Sadly, this specimen met its demise for a second time during the bombing of Munich in WWII. No spinosaurs since Stromer's first find have been as complete.
Spinosaur Teeth
The long narrow snout of spinosaurus contained jaws full of sharply pointed teeth. Unlike the steak knife serrations of T-rex teeth, Spinosaur teeth were smooth and round. Because of the resemblance to the bite of crocodiles, where the upper teeth of the spinosaurus interlock with the lower teeth, scientists think spinosaurus might have had a diet consisting primarily of fish. To add weight to the fish diet theory, acid etched Fish scales have been found in spinosaurs stomachs. While their bodies are well-adapted for meat, their particular variety may have been of the swimming type.