Are you one of those people who think Pterosaurs are dinosaurs? If you are, then you are mistaken. These flying reptiles can be called a distant dinosaur cousin, but they aren’t dinosaurs. There are a lot of misconceptions about these extinct group of winged reptiles. In this blog, our aim is to clear up all those misconceptions by sharing with you some key facts about Pterosaurs. Let’s get started.
Pterosaurs Are Not Dinosaurs
It has been found that the only link between dinosaurs and Pterosaurs is a common ancestor, which is believed to have lived around 230 millions years ago. Beyond this, there are no connections between the two as both of them evolved along different pathways. A unique fact about Pterosaurs is that they dwelled on every continent on Earth. Yes, they inhabited even the Antartica as Antartica was a lot warmer all those millions years ago. They walked on Earth for about 150 million years and then went extinct.
Pterosaurs Were Not Birds Either
We all know that the birds we see in our skies today evolved from dinosaurs. But this evolution occurred a long time after dinosaurs and Pterosaurs had separated and gone in different directions. Again, it is true that birds and Pterosaurs are related, but their connection is as distant as the connection between dinosaurs and Pterosaurs. Pterosaurs, birds, bats, etc., all reached the stage of flying independently, but it was Pterosaurs who flew first in the evolution scale. It was the first vertebrate to achieve this feat.
They Were of Different Sizes
As many as 150 species of Pterosaurs have been identified by paleontologists. Some species had massive head crests while others featured pointy bills that were perfect for bre
Posted: August 02, 2021|||
It is no surprise that there is a widespread and pretty lucrative market for fossils. But did you know that it was a Tyrannosaurus fossil that was excavated in 1990 and auctioned for a whopping $7.6 million that set off this fossil frenzy? It has been often referred to as the “modern gold rush.” Expensive fossils began to be treated as status symbols, which inevitably drew in both rich buyers and unethical sellers looking to make a quick buck. And that also led to the emergence of fake and forged fossils. Even today, this is an issue that plagues both fossil collectors and paleontologists. The market is flooded with enhanced fossils, composite fossils, reconstructed fossils, fossil casts, and fossils that are outright fake. Some of these are easy to identify, but some counterfeits can be quite hard to spot. While professionals use a number of techniques including CT scan and synchrotron, if you are a novice, here are some of the ways in which you can differentiate between fake and authentic fossils:
If you ever see a rare dinosaur fossil being sold for a just a few thousand dollars, chances are it is a fake. When it comes to fossils, you should be wary of unbelievably cheap prices because that usually indicates that either the fossil is a forgery or it has a low commercial value. If you are on a bidding site, it is best to steer clear of items that no one else seems to be bidding on.
Place of origin
If you think you will come across fossils while mowing your lawn, you are wrong. Real fossils are only ever found in certain rock formations, which can be identified through geological maps. In the US, places like Colorado and Utah have some of the most fossil-rich sites, while countries like China and Mongolia account for a large percentage of fossils discovered abroad. When buying fossils, you should always ask for detailed information about pla
Besides the ghastly and impressive shapes of dinosaurs, there’s one thing that never ceases to amaze paleontologists and the general public around the world: their gigantic size.
Take Argentinosaurus, for instance. This titanosaur had a massive size and weighed between 50 and 90 tonnes, as believed by scientists. And if you look at today’s mammals, most of them are only between 10 and 100 kilograms in weight, while only the blue whale surpasses the size of dinosaurs. No wonder people look for titanosaur teeth for sale these days.
With a difference of such magnitude between the long-gone dinosaurs and today’s mammals, it makes sense why people wonder and question: how did dinosaurs grow so big?
Let’s look at the reasons that may have caused dinosaurs to grow so big.
Large body protected dinosaurs from most predators
While it didn’t happen in a blink, dinosaurs eventually grew bigger as part of their evolution. But the reason behind their evolution can be the protection they got from having a body larger than other creatures.
Large animals are harder to hunt, so predators naturally go for smaller animals since they are easy to catch and kill. For example, if you look at elephants, their large size saves them from being attacked by most predators, including tigers, lions, hyenas, and more. The same may have been true for dinosaurs millions of years ago.
They grew in size for food
Present-day giraffes are among the largest animals on Earth. And they became large as a result of the advantage they got from their size. They can reach higher foliage that other animals can’t, allowing them to gather food.
Posted: July 26, 2021|||
When trilobites emerged in the oceanic environment during the Cambrian period, they were already fully formed creatures. They had complex digestive systems, highly developed eyes, and functional calcite carapaces that were quite admirable. In other words, the most advanced life form at that moment on our planet were trilobites! While getting a well-preserved, authentic trilobite fossil is a daunting task, it is also among the most prized possession for a collector. So, we keep adding authentic trilobite fossils for sale to our selection.
Today, we will talk about trilobite eyes. It was fascinating that the creature developed a sophisticated visual system, although not the first one in the animal kingdom with eyes. But there were trilobite suborders, like Agnostina, who were primarily eyeless. The majority had compound pairs of eyes, typically placed on their fixigenas or the fixed cheek shell outer edges.
A Good Eye Design
Trilobite had crystalline lenses that were rigid and could not change shape for focusing better on objects at different distances. But they had double lenses with different refractive indices, which corrected the problem. In fact, the rigid doublet lens allowed trilobites to have a remarkable field depth (they could focus on objects that were near and far with fairly good focus). The image distortion was also minimal.
Three Types Of Trilobite Eyes
Scientists recognize three kinds of eyes in trilobites, namely, abathochroal, holochroal, and schizochroal. The last two were the predominant types. Holochroal eyes had close packing biconvex lenses, with a single corneal layer covering the entire lens. The lens is typically
Posted: May 13, 2021||
For a long time, paleontologists believed that dinosaurs were just land dwellers. They were of this view because they had not discovered fossil remains which would have made them think otherwise. But now, it is becoming sure that swimming dinosaurs possibly existed as well. Paleontologists have been trying to form a model of Spinosaurus for more than a decade. Most of them agreed that this dinosaur had different anatomy than land-dwelling dinosaurs, but they were not sure whether Spinosaurus was capable of swimming or not. But when fossil bones from Spinosaurus’ tail were discovered in south-east Morocco, paleontologists had to rethink about this massive meat-eater dinosaur’s capabilities.
Before we delve into the details of the fossil discovered, let’s first talk about Spinosaurus’description. The first fossil of this dinosaur was found in Egypt around 1910. We all hear so much about Tyrannosaurus Rex being the biggest dinosaur ever. This is not true as Spinosaurus was bigger and perhaps the largest meat-eating dinosaur ever on planet Earth. These dinosaurs lived around 100 years ago in the Cretaceous period in North Africa.
Spinosaurus has been a tricky dinosaur to understand. Its built was quite different from other dinosaurs, for example, its distinctive spines that grew to 5 feet long, its 49 feet length, and of course, its staggering weight of 7 to 20 tons. All these features and the destruction of crucial fossils during World War 2 made it difficult for paleontologists to reconstruct Spinosaurus confidently.
After discovering fossil bones from its tail, paleontologists have found that Spinosaurus’ tail was quite flexible and had a propulsive structure. The tail’s surface area was pretty large too due to a series of tall neural spines. These distinct features of Spinosaurus’ tail show that they engaged in tail-propelled locomotion, something that no other dinosaur was capable of doing.
Scientists became certain that Spinosaurus t
Posted: May 06, 2021||
Carcharocles augustidens is a species from the Carcharoles (or Otodus) genus of the megatoothed sharks. Modern-day researchers believe that this species should not be placed with Great White shark genus. The specimen believed to belong to the extinct white shark is one of the most complete of its kind in the world. Compared to any living white shark, Carcharocles augustidens were much larger and heavier. The fossils that have been discovered included more than 150 teeth and multiple vertebrae. If you’re looking for Angustidens shark tooth for sale, here are four facts that you should know about the species before buying the shark tooth.
The large-sized Angustidens mean that the species must have been powerful predators that could only be rivaled by gigantic sharks and large raptorial sperm whales like the Brygmophyster. A wholly grown adult Augustiden probably fed on small to medium-sized cetaceans like small whales and dolphins. Juvenile Angustidens may have hunted fish and smaller marine animals since it may have been easier for them.
Finding a cluster of fossil teeth from any shark is a rare instant. You can purchase Angustidens shark tooth for sale from Buried Treasure Fossils obtained from Chandler Bridge Formation land site near Summerville, South Carolina, or other coastal locations. These fossils are from the Oligocene (28 million years ago). Carcharocles augustidens like all sharks have a tooth growing factory so that they could replace tooth loss during feeding. This tooth loss helps explain why shark teeth can be found in relative abundance in certain locations.
The vertebrae and teeth dimensions from one Angustidens were found to suggest that the animal was perhaps 8 tonnes in mass and 9m in length. On the other hand, Great White sharks are were about 1.2 t
Posted: April 29, 2021||
Ever wondered how the Cow sharks got their name? Or what makes them so special or different from other sharks that there are now Cow shark teeth for sale?
As insignificant as these questions may seem, the answers are sure to pique your curiosity and interest in Cow sharks. And who knows, you might get yourself a Cow shark tooth for sale after learning about them?
What are Cow Sharks?
The Cow sharks come from a shark family popularly known as Hexanchidae. The term “Hexanchidae” came from Greek, which means "six arches," referring to the fact that some Cow sharks have six-gill slits.
So far, five species of cow sharks have been identified, namely Sharpnose Sevengill, Broadnose Sevengill, Bluntnose Sixgill, Atlantic Sixgill, and the Big Eyed Sixgill.
Of all the species, the Bluntnose Sixgill Shark (Hexanchus griseus) is the biggest, having six gills and a blunt nose, and Atlantic Sixgill is the most recently discovered Cow shark in the family.
What Makes Cow Sharks Special?
Having six-gill slits alone is unique, considering the fact that almost every shark found today has only five-gill slits. And don’t be flabbergasted if we say that two of the cow sharks have seven gills.
The Sharpnose Sevengill and Broadnose Sevengill, as the names suggest, have seven gills, though they are a rare sight.
Another peculiar feature that makes them stand apart from the sharks of other species is their teeth. If you know how their teeth look like, you will have, in all likelihood, no trouble differentiating them from other sharks.
Cow sharks' teeth shape is one of the significant distinctions, with the lower lateral teeth resembling a unique rectangular shape. These lower lateral teeth are covered with a row of cusps that gets shorter as it moves towards the distal end. Due to the structure and appearance of their teeth, many experts compare their lower teeth
Posted: April 22, 2021||
The mention of these happy aquatic creatures often paints the picture of Florida's popular dolphin show at Sea World theme park. The grandeur of the cresting dolphins surrounded by soaring tropical rainbow birds and a happy child petting the aquatic mammal as one of the many reaches up to the audience area. The unison of the sky and water as the realms' majestic creatures come together is quite a dreamy visual experience. Indeed, dolphins are impressive, but the cetologists and other researchers looking for dolphin tooth for sale for studying them might have a different opinion. Their perpetual grin and an overall pleasant demeanor can be misleading. This blog talks about five dangerous facts about these seemingly "gentle and harmless" creatures.
They bite and attack
Fancy a dolphin tooth fossil for sale? These teeth do more than just smiling. Dolphin teeth are very sharp and designed to attack and ravenously kill their prey. Apart from being sharp, dolphins have many teeth in their set to make their attacks impactful. For instance, the bottlenose dolphins can have between eighty to a hundred teeth in their mouth for a firm grip and ultimately secure their prey for consumption. Additionally, at times these mammals might attack an animal (including humans) without any intention of preying on them via a strong blow with their snouts.
They torture their food before eating it
Well, dolphins can be pretty sadistic too. On one note, they do it to prey on rather harder to attack creatures like octopuses who have deadly tentacles around for defense. Dolphins maul and beat them up to break them into smaller pieces before eating them.
Posted: April 15, 2021||
Like any other branch of science, paleontology is constantly evolving. Somewhere some fossil crops up, and experts examine them as evidence and come up with tentative theories. Now, the real test lies in whether those theories are able to endure through time and against counter arguments and criticism from contemporary and future scientists. And when you work on something long enough, especially something like dinosaurs that existed millions of years ago, some misconceptions, misunderstandings and incorrect theories are bound to appear and disappear over time.
Here are some such historical facts about dinosaurs that have now been disproved:
The Stegosaurus had a butt in its hindquarters
In 1877, the discovery of the Stegosaurus baffled naturalists who were still not aware of the existence of giant lizards with bird-sized brains. This was the reason why Othniel C. Marsh, a renowned American paleontologist, introduced the idea of a second brain in the dinosaur’s hip, the function of which was to control the rear part of the animal’s body. This idea was widely refuted and it was found that the cavity in the hip was used to store glycogen.
The Archaeoraptor blunder
The Archaeoraptor fossil, which reportedly came from the Early Cretaceous beds of China, was presented by National Geographic magazine as the best evidence that proved the theory that birds did, in fact, evolve from dinosaurs. It was, however, later found that the fossil was not authentic and was a forgery created using rearranged pieces of fossils of other species. Thi
Posted: April 08, 2021||
Are you a fossil collector? You must have heard about the recent discovery of three partial skeletons of a raptor dinosaur by U.S paleontologists back in 2014. The dinosaur was named Anzu wyliei. In Sumerian mythology, ‘Anzu’ is a bird-like demon; ‘Wyliei,’ the species name, which honors Pittsburgh’s Carnegie Museum’s Trustee’s grandson.
If we talk about appearance, the creature who lived almost 66 million years ago when the king of the dinosaurs, T-Rex, also roamed around the earth, looks like a modern emu’s and a reptile’s cross.
From one fossil enthusiast to another, Anzu claws for sale are available with us, and they will be a great addition to your collection!
Where were the Anzu fossils discovered?
The specimens were extracted from the Hell Creek Formation in the North and South Dakota’s uppermost level. Due to its bird-like appearance and the place of discovery, the creature was jokingly referred to as the “Chicken from Hell.” If you are not aware of Hell Creek Formation’s significance, it is highly valued because of the abundance of T-Rex and Triceratops fossils found there.
The discovery of these skeletons was nothing short of a breakthrough as it provided a much-needed opportunity to understand a dinosaur group about which not much was known. After remaining enveloped in mystery for about a century, the 2014 extraction allowed the scientists to shed light on the anatomy as well as Caenagnathidae’s evolutionary relationships. Anzu is a Caenagnathidae, a type of Theropod group dinosaurs.