Dinosaurs of the 21st Century: masters of the sky

[@lisatwitchell403]

Thank you for one of the best overall presentations of today's knowledge about dinosaurs I have seen anywhere.

[@barkasz6066]

I love how every paleontologist I've watched on youtube subtly rips into Jack Horner and the idea that Spinosaurus would be able to kill a T-rex.

[@mamasandy7986]

Be

[@mamasandy7986]

Pp

[@mamasandy7986]

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[@mamasandy7986]

Lp

[@dwightehowell8179]

Early primitive ceratopsians have been found in North America as well. Others have noted that the Bering land bridge may have been open much of the time during the age of the dinosaurs so saying what first appeared where may not be very certain. Edit: I have read that some Australians have found what they believe to be some fragments of a ceratopsian.

[@brianhammer5107]

this is 9 years old, and the scientific opinion about sails on early-Permian non-mammal synapsids has changed from heat-regulation to one of display ...

[@DD-sw1dd]

Imagine someone hitting a person with a de-evolve gun and they turn into that. 1:50

[@DiscoveryNewsNow]

What if dinosaurs moved fast and jerky like modern birds. That's a very scary thought, imo

[@paullangford8179]

Look for a video of a roadrunner atacking a snake for dinner. Then take a look at T-rex's neck. I bet it attacked the same way.

[@EdwardianTea]

Its really not. Maniraptorans most likely moved in that manner, bearing in mind they have many avian traits

[@colorchanginchev]

They did.some more some less

[@brianhammer5107]

small theropods and orni's DID move like birds

[@DAVIDPETERS12C]

To Martin's issues: check out ReptileEvolution.com and you'll see the microevolution that even Creationists approve of. I'd also suggest that you go out to a dinosaur dig site. Get your hands dirty and you'll see that it was not all laid down in one layer during a single megaflood.

[@bluesky6985]

The flood recorded in the Bible? The first one that ended the first earth age? 13,000 years ago

[@politicallycorrectredskin796]

Obviously a lot of scavengers have stereoscopic vision, so not really a good argument there. Eating dead things saves calories, so it makes sense for any meat-eater to do both.

[@avemetatarsaliaenthusiast8202]

It has far too many strong predatory characteristics for it to be a scavenger. Jack Horner is regarded as sort of a clown in the field, you should take his theories with more salt than others.

[@politicallycorrectredskin796]

@@avemetatarsaliaenthusiast8202 Not sure how you do things, but I am capable of thinking for myself.

[@brianhammer5107]

@@avemetatarsaliaenthusiast8202 STOP! Dr. Horner is certainly not considered a 'clown.' That's absolute rubbish. And this was nine years ago - he's since changed his opinion.

[@pete854a]

40:07 lol his little squeaky voice

[@woodpoetry]

Defer Effie

[@diebesgrab]

I get that this lecture is aimed at novices and that it was probably given before Brontosaurus was reestablished as a genus, but the number of casual errors and gross assumptions present here make me wonder whether this guy even has a degree in the field.

[@DeepPastry]

Horner gets a burn here too, kinda funny. Well that's what happens when you use cutting edge Victorian Era science as the basis of your claims. Modern animal behavior uses cameras and video tape and night vision capabilities to figure out that all those "scavengers" are actually active predators. Ends up basing your ideas on which animals you think look more noble was a dumb idea. EDIT: Oh and Apatosaurus and Brontosaurus are separate species/genus now... again. That part where the Brontosaurus being renamed to Apatosaurus happened way back in the 1800s.

[@paullangford8179]

Apatosaurus was first. Brontosaurus was thought to be a different species, then thought to be the same (and lost its primacy); and now looks like it might be a different species after all. As we get more and more complete fossils, these confluences and divergences are likely to happen.

[@diebesgrab]

Actually Brontosaurus was classified as synonymous with Apatosaurus in the very early 1900s (I wanna say about 1905? Don’t have the date handy), though a few scientists argued against that conclusion at the time and for some reason a lot of museums embraced that minority, which was probably the main cause of public confusion going forward. @Paul Langford Apatosaurus (type species A. ajax) and Brontosaurus (type species B. excelsus) were always different species, no one has ever questioned that. What came into question was whether B. excelsus was sufficiently different from A. ajax and other Apatosaurus species to constitute a separate genus; for a long time, the community consensus was no, but that 2015 study on Apatosaurines did a pretty convincing job demonstrating that they were sufficiently distinct, even assigning a couple other formerly Apatosaurus species to Brontosaurus, as well (B. yahnahpin and B. parvus).

[@kesterfae5447]

Noticed a number of mispronunciations ( or at least different pronunciations) on his part that differ from most other ways of sounding names of the animals. he did call Triceratops are Citreratops when referring to the Charles R Knight Paleoart, which must have just been a mistake. Interesting, really... why he opted to sound out their names in such a way.

[@AndrewHislop1066]

Krystufa. Sort your grammar out before criticising other people's command of language.

[@kesterfae5447]

I confess my grammar has been slack recently. That would be a sick burn if what I typed was intended to be a criticism, and not an observation. Was simply interested, for all I know there are different ways to pronounce their names. It's hard to resist calling people out on hypocrisy, isn't it?

[@kc3718]

he seems to have a strong accent, maybe German or Swiss ? But yes, there are different pronounciations, for most words. I studied at a good English University but many USA pronounciations sound 'wrong' to me...just depends where you are and who taught you.

[@AaaaNinja]

@@kc3718 On top of that he's also Australian and there are words where they put emphasis on weird syllables.

[@scott-ex8pv]

evolution on the up or gone wrong :) why so wonky.?! all birds know better ;) but still very scary to be on the the food chain !

[@federook78]

Omg the tongue clicking before every single sentence :/

[@RICDirector]

Ceratopsians went extinct for lack of males. Those are the ones they found in Europe, because they just wouldn't stop to ask for directions! :P