FOR AGES 3 YEARS TO 18 YEARS
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Kidadl provides inspiration to entertain and educate your children. We recognise that not all activities and ideas are appropriate and suitable for all children and families or in all circumstances. Our recommended activities are based on age but these are a guide. We recommend that these ideas are used as inspiration, that ideas are undertaken with appropriate adult supervision, and that each adult uses their own discretion and knowledge of their children to consider the safety and suitability.
Kidadl cannot accept liability for the execution of these ideas, and parental supervision is advised at all times, as safety is paramount. Anyone using the information provided by Kidadl does so at their own risk and we can not accept liability if things go wrong.
Harpactognathus, meaning 'seizing or grasping jaw', can be considered one of the most interesting flying dinosaurs or pterosaurs. A partial skull belonging to this rhamphorhynchid pterosaur was discovered in the Morrison Formation located in Wyoming, USA, and it was found that it lived almost 157.3-152.1 million years ago, making it the oldest pterosaur found in the Morrison Formation. This genus consists of a single species, Harpactognathus gentryii. It was probably one of the largest long-tailed pterosaurs to have lived on Earth. The most unique feature was the large bony crest on its head that extended till the tip of its jaw. The recovered Harpactognathus skull also consisted of the snout, which was found to be upturned and become thinner at the tip.
Though it was earlier assumed that all flying dinosaurs, including Harpactognathus, preyed upon fish that existed back then, recent studies have shown that they could have very well been carnivores or insectivores, and fed on vertebrates or insects that lived in terrestrial habitats. The structure of the teeth of this pterosaur indicated that they were not only used to catch and hold prey between its jaws but also to eat plant matter. Keep reading to find out more fun and interesting facts about this brilliant pterosaur!
If you want to learn about other dinosaurs, make sure to check out our Ludodactylus and Metriorhynchus fun facts pages.
Harpactognathus can be phonetically pronounced as 'Har-pac-tog-na-fus'.
This animal was a type of flying dinosaur or a pterosaur belonging to the family Ramphorhynchidae. It is a rhamphorhynchid pterosaur, which means that it is one of the more primitive flying reptiles of history. Rhamphorhynchid pterosaurs are characterized by their long tails, which are usually not a feature associated with their descendants. Just like most pterosaurs, it had pycnofibers on its body, which are hair-like filaments that are thought to look and feel like fur. This pterosaur resembled Scaphognathus, which came to existence about five million years after Harpactognathus, except that the latter has a slightly larger wingspan and skull size.
These pterosaurs lived on Earth during the Kimmeridgian age of the Late Jurassic period. They would have existed almost 157.3-152.1 million years ago.
Almost all rhamphorhynchid pterosaurs, including the Harpactognathus, are said to have gone extinct by the end of the Late Jurassic period.
The few specimens of this flying dinosaur that have been found, were all discovered in what is now the U.S. state of Wyoming.
Unlike many that are found in marine habitats, this rhamphorhynchid pterosaur was found in what would have been a terrestrial environment. This lines up with the theory that most pterosaurs were terrestrial predators and would have hunted small vertebrates and dinosaurs.
Though it is not known if this flying dinosaur was a social or gregarious animal, other dinosaurs that also existed during the Late or Upper Jurassic were sauropods such as Brontosaurus and Diplodocus. Carnivorous theropods like Allosaurus and Ceratosaurus were also found in the Morrison Formation and were found to exist in the same time period as Harpactognathus.
The lifespan of a Harpactognathus is unknown due to a lack of research and evidence.
These pterosaurs produced young ones by laying eggs. There has been evidence that some pterosaurs buried their eggs below the earth's surface.
It has been suggested that these pterosaurs showed sexual dimorphism in the form of a bony head crest, the use of which could have been to impress members of the opposite sex.
Harpactognathus was one of the largest rhamphorhynchid pterosaurs that ever lived on Earth. The partial skull that was recovered consisted of a snout and showed that it had a bony crest that extended till the tip of its jaws. Its snout was found to be thinner at the tip than at the base, and slightly upturned. The skull was larger than the skulls of pterosaurs that came later, at a length of about 11–12 in (28–30 cm). It had a long tail that is said to have had a vane at the end of it. Its body would have been covered in pycnofibers, which are hair-like filaments that covered the bodies of most flying dinosaurs.
The number of bones that a Harpactognathus would have had is not yet known as very few specimens of this pterosaur have been collected so far.
There is no evidence showing how or whether these pterosaurs could communicate with each other, though it would not be unusual for these creatures to have had some form of a bird call.
Although its body length cannot be estimated due to the lack of a complete skeleton, their wingspan has been thought to be quite big for a rhamphorhynchid that lived during the Upper Jurassic period, at a length of 98 in (2.5 m). However, the largest of all pterosaurs, the Arambourgiania, had a wingspan that was six times more than that.
Though the speed of a Harpactognathus is not known, some pterosaurs could have flown at an estimated speed of 80 mph (128 kph)!
The weight of this pterosaur is not known due to the lack of a complete skeleton being found.
The pterosaurs of this genus did not have specific male or female names.
Baby pterosaurs of this genus could have been called hatchlings or flaplings. Some fossils have been found of very young pterosaurs, and they showed that most of them were very well-developed, and they would have needed parental care and protection for only a very short period of time. This was because their wings grew rapidly and thus, they would have been able to leave their nests soon after emerging from their eggs.
The diet of these flying dinosaurs has been a subject of confusion. Initially assumed to be fish-eaters, it has been recently found that they could have been one of the major terrestrial predators of small dinosaurs or insects. However, the structure of the teeth of Harpactognathus showed that they could have fed on some plant matter as well.
Although larger and more recent pterosaurs have been suspected of being highly aggressive, and even capable of attacking and consuming a human being if it could, a Harpactognathus would not have been as dangerous because it would have gone for prey of a smaller size.
Flying dinosaurs are often referred to as pterodactyls in pop culture. However, that term is not accurate at all and only applies to the few pterosaurs belonging to the order Pterodactyloidea. The correct term to be used is pterosaurs.
A partial skull of this pterosaur was discovered in 1996 by a volunteer named Joe Gentry. It was only in 2003 that it was named by Kenneth Carpenter, David A. Unwin, Karen Cloward, Clifford Miles, and Clark Miles. The name, Harpactognathus, meaning 'seizing or grasping jaw' in Greek, was given because of seemingly strong jaws, and teeth that were capable of tightly holding prey between them. The name of its type species, H. gentryii, honors Joe Gentry for discovering the fossils.
A few specimens of Harpactognathus have been found near the Bone Cabin Quarry in the Morrison Formation. This Formation is situated in Albany County of Wyoming, USA.
Here at Kidadl, we have carefully created lots of interesting family-friendly dinosaur facts for everyone to discover! For more relatable content, check out these Yinlong facts and Heterodontosaurus facts for kids.
You can even occupy yourself at home by coloring in one of our free printable Harpactognathus coloring pages.
Main image by Tim Evanson and second image by Dmitry Bogdanov.
*Please note that this is an image of a Scaphognathus, a pterosaur similar to the Harpactognathus. If you have an image of a Harpactognathus, please let us know at [email protected].
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At Kidadl we pride ourselves on offering families original ideas to make the most of time spent together at home or out and about, wherever you are in the world. We strive to recommend the very best things that are suggested by our community and are things we would do ourselves - our aim is to be the trusted friend to parents.
We try our very best, but cannot guarantee perfection. We will always aim to give you accurate information at the date of publication - however, information does change, so it’s important you do your own research, double-check and make the decision that is right for your family.
Kidadl provides inspiration to entertain and educate your children. We recognise that not all activities and ideas are appropriate and suitable for all children and families or in all circumstances. Our recommended activities are based on age but these are a guide. We recommend that these ideas are used as inspiration, that ideas are undertaken with appropriate adult supervision, and that each adult uses their own discretion and knowledge of their children to consider the safety and suitability.
Kidadl cannot accept liability for the execution of these ideas, and parental supervision is advised at all times, as safety is paramount. Anyone using the information provided by Kidadl does so at their own risk and we can not accept liability if things go wrong.
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