When one conveys certain things, particularly of such gravity, should one not then appropriately cite sources, authorities...
Quote from: Dark Lightning on July 15, 2026, 01:39:47 AM. . . The electrical tech, in order to save money, bought one large spool of black wire. . . .
That's demented.
QuoteJurassic Park was wrong. Again.
In the second movie, hunters find an infant Tyrannosaurus rex and use it to lure the adults into a trap.
But in reality, that baby would have been much smaller, about the size of a cat. And it probably wouldn't have been alone – the nest may have been absolutely crawling with dozens of them.
It likely wouldn't have been very useful as bait either: Its parents probably would have considered losing a baby or two as just part of the process, and wouldn't have cared enough to push a research trailer off a cliff.
So why are we updating our understanding of T. rex's childhood?
In a "vanishingly rare" discovery, paleontologists have found and closely examined fossils of tyrannosaur hatchlings. The remarkable findings are published in the journal Biology – and the implications go way beyond everyone's favorite dinosaur.
"Going through museum collections, my colleagues and I have discovered the first remains of hatchling tyrannosaurs," announced Nick Longrich, paleontologist and evolutionary biologist at the University of Bath in the UK.
[. . .]
Longrich and his team set out to investigate these fragmented fossils gathering dust in storeroom drawers, expecting to find adult specimens of small dinosaurs. Instead, ironically, the work led the team back to the big guys.
One of the small bones appeared to be a third metatarsal – the middle foot bone – of a theropod dinosaur. But on closer inspection, it didn't look like it came from a fully grown animal.
"The surface of the bone was incredibly porous," Longrich says in a video on his YouTube channel.
"And this is the result of all these little microscopic blood vessels creating this dense network of blood vessels. And these nourish the bone as it grows. So they're providing blood to the bone cells as they deposit bone tissue and remodel the bone. And this is typical of an immature dinosaur."
When the bone was compared to others of its era, the researchers realized only one species fit the characteristics they were seeing.
"This is the foot bone of a very, very tiny T. rex. This is the smallest T. rex that we've ever seen," said Longrich.
After that find, the team began to look more closely at other small fossils of bones and teeth, and realized that many could also be attributed to tyrannosaur hatchlings.
[. . .]
The goal of reproduction is obviously to make more of yourself, and in a general sense, organisms use one of two broad strategies to get there.
They either have lots of offspring, quickly and often, so that it doesn't really matter if some (or most) of them don't live very long – there are plenty of backups. Organisms that use this method, such as rodents, are known as r-strategists.
The other method is to have fewer babies, but invest heavily in making sure they survive. These are the K-strategists, and that group includes whales and, of course, us.
[. . .]
[T]he new discovery that tyrannosaur young were small and numerous suggests they had more r-strategist tendencies than we thought.
[Continues . . .]
QuoteAbstract:
Tyrannosaurs were giant predatory dinosaurs that occupied the apex of Late Cretaceous food chains. Little is known about the early life and reproductive ecology of tyrannosaurs due to the extreme rarity of hatchling and juvenile fossils.
We report bones of hatchlings (<1 yr) for Tyrannosaurus rex and Gorgosaurus libratus, weighing ~2.5 kg and ~2.4 kg, respectively, i.e., <0.1% of adult mass. Clutches were likely large. We conservatively estimate ~20 eggs in a small adult T. rex versus ~30 eggs in the largest T. rex, and clutches of ~15 eggs in G. libratus; larger clutches of 50 or even 100 eggs are not impossible.
This suggests an r-selected reproductive strategy. Synchrotron scans reveal Haversian bone remodeling, suggesting that tyrannosaurs moved soon after hatching. Hatchling tyrannosaurs' small size and precociality suggest limited parental care; teeth of hatchlings show wear suggesting that they fed on relatively large vertebrates.
Tyrannosaurs had proportionately larger offspring than most reptiles, but relatively smaller hatchlings than Eumaniraptora and birds, suggesting retention of a primitive reproductive strategy intermediate between that of basal diapsids and birds. Multiple dinosaur lineages evolved large eggs independently, suggesting an evolutionary trend towards increased parental investment.
QuoteJurassic Park was wrong. Again.
In the second movie, hunters find an infant Tyrannosaurus rex and use it to lure the adults into a trap.
But in reality, that baby would have been much smaller, about the size of a cat. And it probably wouldn't have been alone – the nest may have been absolutely crawling with dozens of them.
It likely wouldn't have been very useful as bait either: Its parents probably would have considered losing a baby or two as just part of the process, and wouldn't have cared enough to push a research trailer off a cliff.
So why are we updating our understanding of T. rex's childhood?
In a "vanishingly rare" discovery, paleontologists have found and closely examined fossils of tyrannosaur hatchlings. The remarkable findings are published in the journal Biology – and the implications go way beyond everyone's favorite dinosaur.
"Going through museum collections, my colleagues and I have discovered the first remains of hatchling tyrannosaurs," announced Nick Longrich, paleontologist and evolutionary biologist at the University of Bath in the UK.
[. . .]
Longrich and his team set out to investigate these fragmented fossils gathering dust in storeroom drawers, expecting to find adult specimens of small dinosaurs. Instead, ironically, the work led the team back to the big guys.
One of the small bones appeared to be a third metatarsal – the middle foot bone – of a theropod dinosaur. But on closer inspection, it didn't look like it came from a fully grown animal.
"The surface of the bone was incredibly porous," Longrich says in a video on his YouTube channel.
"And this is the result of all these little microscopic blood vessels creating this dense network of blood vessels. And these nourish the bone as it grows. So they're providing blood to the bone cells as they deposit bone tissue and remodel the bone. And this is typical of an immature dinosaur."
When the bone was compared to others of its era, the researchers realized only one species fit the characteristics they were seeing.
"This is the foot bone of a very, very tiny T. rex. This is the smallest T. rex that we've ever seen," said Longrich.
After that find, the team began to look more closely at other small fossils of bones and teeth, and realized that many could also be attributed to tyrannosaur hatchlings.
[. . .]
The goal of reproduction is obviously to make more of yourself, and in a general sense, organisms use one of two broad strategies to get there.
They either have lots of offspring, quickly and often, so that it doesn't really matter if some (or most) of them don't live very long – there are plenty of backups. Organisms that use this method, such as rodents, are known as r-strategists.
The other method is to have fewer babies, but invest heavily in making sure they survive. These are the K-strategists, and that group includes whales and, of course, us.
[. . .]
[T]he new discovery that tyrannosaur young were small and numerous suggests they had more r-strategist tendencies than we thought.
[Continues . . .]
QuoteAbstract:
Tyrannosaurs were giant predatory dinosaurs that occupied the apex of Late Cretaceous food chains. Little is known about the early life and reproductive ecology of tyrannosaurs due to the extreme rarity of hatchling and juvenile fossils.
We report bones of hatchlings (<1 yr) for Tyrannosaurus rex and Gorgosaurus libratus, weighing ~2.5 kg and ~2.4 kg, respectively, i.e., <0.1% of adult mass. Clutches were likely large. We conservatively estimate ~20 eggs in a small adult T. rex versus ~30 eggs in the largest T. rex, and clutches of ~15 eggs in G. libratus; larger clutches of 50 or even 100 eggs are not impossible.
This suggests an r-selected reproductive strategy. Synchrotron scans reveal Haversian bone remodeling, suggesting that tyrannosaurs moved soon after hatching. Hatchling tyrannosaurs' small size and precociality suggest limited parental care; teeth of hatchlings show wear suggesting that they fed on relatively large vertebrates.
Tyrannosaurs had proportionately larger offspring than most reptiles, but relatively smaller hatchlings than Eumaniraptora and birds, suggesting retention of a primitive reproductive strategy intermediate between that of basal diapsids and birds. Multiple dinosaur lineages evolved large eggs independently, suggesting an evolutionary trend towards increased parental investment.