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Birds are the only surviving dinosaurs
Posted on 5/29/22 at 10:41 pm
Posted on 5/29/22 at 10:41 pm
LINK
It’s a bit surprising, but birds are the only remaining dinosaurs. Lizards and other reptiles are not direct descendants of the extinct dinosaurs even though they are fellow reptiles. I find this surprising because I always thought lizards were like undersized dinosaurs.
It’s believed that birds’ ability to fly, their ability to eat different types of food, and their small size are some of the factors that contributed to them being able to survive the mass extinction at the end of the Cretaceous period around 64 million years ago. This extinction is believed to have been caused by an asteroid several miles wide slamming into the Gulf of Mexico near the Yucatán Peninsula.
The mass extinction brought the Age of Reptiles to a close and ushered in the Age of Mammals. So basically, we humans would never have evolved if this extinction of dinosaurs has not happened.
It’s a bit surprising, but birds are the only remaining dinosaurs. Lizards and other reptiles are not direct descendants of the extinct dinosaurs even though they are fellow reptiles. I find this surprising because I always thought lizards were like undersized dinosaurs.
It’s believed that birds’ ability to fly, their ability to eat different types of food, and their small size are some of the factors that contributed to them being able to survive the mass extinction at the end of the Cretaceous period around 64 million years ago. This extinction is believed to have been caused by an asteroid several miles wide slamming into the Gulf of Mexico near the Yucatán Peninsula.
The mass extinction brought the Age of Reptiles to a close and ushered in the Age of Mammals. So basically, we humans would never have evolved if this extinction of dinosaurs has not happened.
35
Posted on 5/29/22 at 10:47 pm to cbree88
Essentially, the Linnaean hierarchical classification is not really how taxonomy is done nowadays.
These days we speak of clades being subsets of other clades. Aves (birds) are one subset of dinosaurs which are a subset of reptiles. Reptiles, amphibians, and mammals are all subsets of land based Chordata, which basically means we’re are clever fish that grew legs to walk on land.
These days we speak of clades being subsets of other clades. Aves (birds) are one subset of dinosaurs which are a subset of reptiles. Reptiles, amphibians, and mammals are all subsets of land based Chordata, which basically means we’re are clever fish that grew legs to walk on land.
This post was edited on 5/29/22 at 10:49 pm
Posted on 5/29/22 at 10:49 pm to cbree88
I'd like to see the genetic studies on this if we're going to continue saying it. As opposed to the charismatic archaeology professors who constantly have to come up with more and more extreme assertions to keep their funding flowing.
Posted on 5/29/22 at 10:51 pm to squid_hunt
quote:
As opposed to the charismatic archaeology professors who constantly have to come up with more and more extreme assertions to keep their funding flowing.
fricking philistine.
Posted on 5/29/22 at 10:52 pm to cbree88
I don't believe that.
Posted on 5/29/22 at 10:52 pm to cbree88
watch a chicken walk. you can see that t rex is ancester of the bird
Posted on 5/29/22 at 10:53 pm to UndercoverBryologist
quote:
fricking philistine.
Yep. I wouldn't want to talk about the fact that this was all just imagined one day and impossible to verify either.
Posted on 5/29/22 at 10:55 pm to rickyh
quote:
I don't believe that.
There’s enough evidence to demonstrate that birds are nothing more than modern day dinosaurs, but the most striking is the similarities in skeletal structures:
Posted on 5/29/22 at 10:55 pm to cbree88
Posted on 5/29/22 at 10:56 pm to UndercoverBryologist
quote:
There’s enough evidence to demonstrate that birds are nothing more than modern day dinosaurs, but the most striking is the similarities in skeletal structures:
Now do dolphins and ichtyosaurs.
Posted on 5/29/22 at 10:57 pm to squid_hunt
Posted on 5/29/22 at 10:57 pm to Kafka
Posted on 5/29/22 at 11:01 pm to cbree88
quote:
Birds are the only surviving dinosaurs
Wings from arms. It just seems like a stretch.
Posted on 5/29/22 at 11:01 pm to Boo Krewe
quote:
watch a chicken walk.
Posted on 5/29/22 at 11:03 pm to squid_hunt
Like I said, there’s more than enough key pieces of information. The skeletal structure is just visually striking.
We can also use molecular phylogenetic (trees built upon how closely similar different species are to one another based upon genetic similarities): LINK /
We can also use molecular phylogenetic (trees built upon how closely similar different species are to one another based upon genetic similarities): LINK /
quote:
“Most of the collagen sequence was obtained from protein and genome databases but we also needed to sequence some critical organisms, including modern alligator and modern ostrich, by mass spectrometry,” says Asara, director of the mass spectrometry core facility at BIDMC and instructor in pathology at HMS. “We determined that T. rex, in fact, grouped with birds — ostrich and chicken — better than any other organism that we studied. We also show that it groups better with birds than modern reptiles, such as alligators and green anole lizards.”
Posted on 5/29/22 at 11:07 pm to UndercoverBryologist
quote:
The skeletal structure is just visually striking.
As is dolphins and ichtyosaurs.
At least we're getting to real science and not just fantasy. But all it proves is t-rexes were giant chickens. We already have those. And fairly recently. (Wikipedia)
Posted on 5/29/22 at 11:11 pm to LegendInMyMind
quote:
Birds aren't real.
Crap. Forgot about that. You're right.
Posted on 5/29/22 at 11:13 pm to squid_hunt
quote:
You're right.
Of course.
Posted on 5/29/22 at 11:24 pm to cbree88
Gators and crocs beg to differ
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