Have you heard of myths about how back in the day on earth, there used to live gargantuan giants? Well, I think our ancestors had a pretty good hunch about what really happened, actually. Most of our modern animals are so small compared to what the animals used to be like, but there are some interesting exceptions to the rule.
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Have you heard of myths about how back in the day on earth, there used to live gargantuan giants? Well, I think our ancestors had a pretty good hunch about what really happened, actually. Most of our modern animals are so small compared to what the animals used to be like, but there are some interesting exceptions to the rule.
Anyone who has witnessed majestic whales or lumbering elephant seals in person would be forgiven for associating ocean life with unlimited size in mammals, but new research reveals that mammal growth is actually more constrained in water than on land.
A compilation of the best Argentinosaurus illustrations, facts, fossils, and maps. See how it lived in South America during the Cretaceous period.
Roman Uchytel is a Ukrainian paleontologist and graphic designer who recreates prehistoric fauna, providing an interesting scale comparison of our ancestors' features. He contrasts the sizes of extinct species with their modern relatives, placing them side by side and the result is fascinating!
Did you know that giant ground sloths the size of elephants once inhabited South America? They were about ten times larger than the modern two-toed sloth!
To date only the length of the legendary giant shark Megalodon had been estimated but now, a new study led by the University of Bristol and Swansea University…
A new study led by Swansea University and the University of Bristol has revealed the size of the legendary giant shark Megalodon, including fins that are as large as an adult human. Palaeoartist reconstruction of a 16m adult Megalodon [Credit: Oliver E. Demuth] There is a grim fascination in determining the size of the largest sharks, but this can be difficult for fossil forms where teeth are often all that remain. Today, the most fearsome living shark is the Great White, at over six metres (20 feet) long, which bites with a force of two tonnes. Its fossil relative, the big tooth shark Megalodon, star of Hollywood movies, lived from 23 to around three million years ago, was over twice the length of a Great White and had a bite force of more than ten tonnes. The fossils of the Megalodon are mostly huge triangular cutting teeth bigger than a human hand. Jack Cooper and colleagues from Swansea University and the University of Bristol used a number of mathematical methods to pin down the size and proportions of this monster, by making close comparisons to a diversity of living relatives with ecological and physiological similarities to Megalodon. The project was supervised by shark expert Dr Catalina Pimiento from Swansea University and Professor Mike Benton, a palaeontologist at the University of Bristol. Dr Humberto Ferrón from Bristol also collaborated. Comparison of an adult Megalodon's dorsal fin to a 1.6m diver [Credit: Oliver E. Demuth] Jack Cooper, who will now start his PhD at Swansea University said: "I have always been mad about sharks. As an undergraduate, I have worked and dived with Great Whites in South Africa - protected by a steel cage of course. It's that sense of danger, but also that sharks are such beautiful and well-adapted animals, that makes them so attractive to study. "Megalodon was actually the very animal that inspired me to pursue palaeontology in the first place at just six years old, so I was over the moon to get a chance to study it. This was my dream project. But to study the whole animal is difficult considering that all we really have are lots of isolated teeth." Previously the fossil shark, known formally as Otodus megalodon, was only compared with the Great White. Jack and his colleagues, for the first time, expanded this analysis to include five modern sharks. Dr Catalina Pimiento said: "Megalodon is not a direct ancestor of the Great White but is equally related to other macropredatory sharks such as the Makos, Salmon shark and Porbeagle shark, as well as the Great white. We pooled detailed measurements of all five to make predictions about Megalodon." Computational reconstruction of Megalodon's size and proportions at different life stages: a) 16m adult with 12 estimated body dimensions recorded; b) 3m new-born and c) 8m juvenile [Credit: Oliver E. Demuth] Professor Benton added: "Before we could do anything, we had to test whether these five modern sharks changed proportions as they grew up. If, for example, they had been like humans, where babies have big heads and short legs, we would have had some difficulties in projecting the adult proportions for such a huge extinct shark. But we were surprised, and relieved, to discover that in fact that the babies of all these modern predatory sharks start out as little adults, and they don't change in proportion as they get larger." Jack Cooper added: "This means we could simply take the growth curves of the five modern forms and project the overall shape as they get larger and larger - right up to a body length of 16 metres." The results suggest that a 16-metre-long Otodus megalodon likely had a head round 4.65 metres long, a dorsal fin approximately 1.62 metres tall and a tail around 3.85 metres high. This means an adult human could stand on the back of this shark and would be about the same height as the dorsal fin. The reconstruction of the size of Megalodon body parts represents a fundamental step towards a better understanding of the physiology of this giant, and the intrinsic factors that may have made it prone to extinction. The findings are published in the journal Scientific Reports. Source: Swansea University [September 03, 2020] Labels Fossils, Palaeontology, UK TANN you might also like Newer Post Older Post
Have you heard of myths about how back in the day on earth, there used to live gargantuan giants? Well, I think our ancestors had a pretty good hunch about what really happened, actually. Most of our modern animals are so small compared to what the animals used to be like, but there are some interesting exceptions to the rule.
Have you heard of myths about how back in the day on earth, there used to live gargantuan giants? Well, I think our ancestors had a pretty good hunch about what really happened, actually. Most of our modern animals are so small compared to what the animals used to be like, but there are some interesting exceptions to the rule.
photo by iStock 大きな耳の上にはさらに黒色のトサカのような長い房毛。身体能力は高くジャンプ力は3メートルを越えると言われているカラカルは、獰猛ながらそのルックスと高貴な顔立ちに人気が高い。 海外まとめサイトにてカラカルの画像が集められていたの
When the Baiji Dolphin was declared "functionally extinct" in 2006, it was a once-in-25-million-year event. Never before had a whole species of dolphin been wiped off the planet because of human activity. Despite a last-ditch effort to save the species, it was a case of too little to
Have you heard of myths about how back in the day on earth, there used to live gargantuan giants? Well, I think our ancestors had a pretty good hunch about what really happened, actually. Most of our modern animals are so small compared to what the animals used to be like, but there are some interesting exceptions to the rule.
Have you heard of myths about how back in the day on earth, there used to live gargantuan giants? Well, I think our ancestors had a pretty good hunch about what really happened, actually. Most of our modern animals are so small compared to what the animals used to be like, but there are some interesting exceptions to the rule.
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The megalodon lived from about 23 million to three million years ago. The biggest megalodons would likely have had a head round 15 feet long, a 5 foot 4 inch dorsal fin and a 12.6ft tall tail.
In a Tunisian desert, scientists unearthed remains of a crocodile that may have stretched...
Have you heard of myths about how back in the day on earth, there used to live gargantuan giants? Well, I think our ancestors had a pretty good hunch about what really happened, actually. Most of our modern animals are so small compared to what the animals used to be like, but there are some interesting exceptions to the rule.
A terrifying spider five times the size of modern arachnids has been discovered by scientists in regional Australia.
Roman Uchytel is a Ukrainian paleontologist and graphic designer who recreates prehistoric fauna, providing an interesting scale comparison of our ancestors' features. He contrasts the sizes of extinct species with their modern relatives, placing them side by side and the result is fascinating!
The Megalodon shark was an enormous predator in the Cenozoic Era of prehistoric Earth.
A big batch of funny pics and wtf things to help you breeze through the day.
