The wingspan of the largest species of pteranodon (the term employed by working paleontologists as opposed to the culturally popular term "pterodactyl") was up to 30 feet. This wingspan is much larger than that of any modern flying bird.Know More
About.com states that it is unclear when "pterodactyl" became a synonym for pterosaurs in general and for the pterodactylus and pteranodon specifically. Most lay people, along with Hollywood screenwriters, continue to use the term. "Working paleontologists never refer to 'pterodactyls,' instead focusing on individual pterosaur genera," the site states.
Pterodactylus was discovered in 1784. The pteranodon was discovered in the mid-19th century. Later paleontologists counted numerous individual species among each of these genera.Learn more about Dinosaurs
The habitat of the pterodactyl was the shores of Europe and South Africa. The pterodactyl roamed the skies during the Jurassic period, approximately 150 million years ago. At this time its habitat along the coasts of Europe and South Africa was wetlands, marshes and swamps.Full Answer >
There seems to be a general lack of consensus among paleontologists as to what purpose the Spinosaurus' sail served; not only is there a lack of certainty as to why the sail existed, there also seems to be some question about whether the dinosaur actually had a sail at all. All questions about the Spinosaurus' anatomy must be answered using fossil evidence, which is limited to fossilized skeletal remains that show a crest of bones protruding upward from the dinosaur's spine. While some scientists feel that these bones provided the structure for a sail-like flap of skin, other argue that this spinal structure actually supported a large hump rather than a distinct sail.Full Answer >
Scientists do not know exactly why the pterodactyls died out approximately 65 million years ago. Some scientists believe that they died as a result of a meteor impact, while others believe climate change was to blame. Some scientists believe that volcanic gases were the leading cause, according to ABC Science.Full Answer >
While some scientists argue that Deinonychus was a pack-hunting dinosaur, not all paleontologists agree with this assertion, though there is some isolated fossil evidence showing multiple Deinonychus specimens fossilized with a much larger prey dinosaur species. This evidence may establish that there was at least one instance of Deinonychus attacking the same prey, which was arguably too large to be taken down by a single Deinonychus, but that evidence is not sufficient for all experts in the field to agree that this dinosaur was definitely a pack hunter. There is additional evidence to support this idea, including multiple fossil sites suggesting that Deinonychus regularly fed on this larger dinosaur, the Tenontosaurus.Full Answer >