Welcome Guest [Log In] [Register]






Shoot a firework rocket ~ Winners!
Make a forum zoo!

Welcome to The Round Table. We hope you enjoy your visit.


You're currently viewing our forum as a guest. This means you are limited to certain areas of the board and there are some features you can't use. If you join our community, you'll be able to access member-only sections, and use many member-only features such as customizing your profile, sending personal messages, and voting in polls. Registration is simple, fast, and completely free.


Join our community!


If you're already a member please log in to your account to access all of our features:

Username:   Password:
Add Reply
What annoys you about paleontology?; Rant on about moronic theories, complaints, or just animals that annoy you.
Topic Started: Sep 28 2013, 05:04 PM (256,224 Views)
Incinerox
Member Avatar
Āeksiot Zaldrīzoti

I can tell you right now, it was nowhere near as cold as Yixian.

Nowhere near.

I posted about it in another topic.

But to sum up what I said, Northern China was actually colder than the Antarctic during the cretaceous because of some weird thing going on with hypothesised oceanic currents in the Pacific. Antarctica got the warm end of what's essentially a backwards Gulf Stream. China just got cold winds straight from the North Pole or something like that.

I think I was making a point about dinosaurs in snow.

I forget what I deemed suitable modern analogues for either ecosystem. Have to find the post for that.

What I do remember was that it was that paper specifically which was involved in the discussion last time.
Offline Profile Quote Post Goto Top
 
babehunter1324
No Avatar


That's interesting, specially considering that the most quoted avarage temperature for Yixian is close to the range calculated in the study for Hell Creek, maybe it was for some reason a lot more seasonally variable than Hell Creek... That's just a guess.

It certainly does help to settle that Choristodereans are not good indicatives of subtropical climates for sure, which might mean that the presence of Champsaurus wasn't as limiting for cold temperatures as the presence of some Crodilians species in very Northern lattitudes during the Cretaceous.

(And da*n I just find out about Champsosaurus presenting a very sexual dimorphic anatomy that would could cause very big changes in the way both sexes behaved...)
Edited by babehunter1324, Jul 5 2015, 06:20 PM.
Offline Profile Quote Post Goto Top
 
Paleodude
Member Avatar
ex-Krampus

It annoys me when I hear kids at Target say that Stegoceratops is their favorite dinosaur. I then asked him wether it was a real dinosaur or not and his response was priceless, "Well they made a toy out of it so it must be real." I have no more faith in children.
Offline Profile Quote Post Goto Top
 
Consultant
Member Avatar


babehunter1324, I think I heard that very large modern crocodilians can actually get enough energy by just putting a few osteoderms out of the water. So it would actually help with basking to be larger. I got this info a long time ago and can't remember the details so I'm probably wrong with how I'm wording this.
Offline Profile Quote Post Goto Top
 
Incinerox
Member Avatar
Āeksiot Zaldrīzoti

babehunter1324
Jul 5 2015, 06:08 PM
That's interesting, specially considering that the most quoted avarage temperature for Yixian is close to the range calculated in the study for Hell Creek, maybe it was for some reason a lot more seasonally variable than Hell Creek... That's just a guess.

It certainly does help to settle that Choristodereans are not good indicatives of subtropical climates for sure, which might mean that the presence of Champsaurus wasn't as limiting for cold temperatures as the presence of some Crodilians species in very Northern lattitudes during the Cretaceous.

(And da*n I just find out about Champsosaurus presenting a very sexual dimorphic anatomy that would could cause very big changes in the way both sexes behaved...)
Choristoderes were more cold tolerant than any crocodilian. You find them in croc habitats and in more distant latitudes and remote areas. Only Australia and Antarctica kept their Temnospondyls, on the basis that I think choristoderes never made it there, but I don't know.

Choristoderes annoy me though.
Offline Profile Quote Post Goto Top
 
Yi Qi
Member Avatar


Incinerox
Jul 5 2015, 07:32 PM
Choristoderes annoy me though.
Posted Image

Inside jokes aside

IIRC weren't many cretaceous crocodiles warm blooded? Most of the terrestrial ones were, Notosuchians atleast i'm sure were high metabolism homeotherms from what i can remember, and the ancestral crocodilian IIRC was a warm blooded animal, as evidenced by modern crocodile's Foramen of Panizza, which indicates that the aquatic forms are secondarily cold blooded.
Edited by Yi Qi, Jul 5 2015, 09:45 PM.
Offline Profile Quote Post Goto Top
 
Paleop
Member Avatar
Paleopterix

Paleodude
Jul 5 2015, 06:13 PM
It annoys me when I hear kids at Target say that Stegoceratops is their favorite dinosaur. I then asked him wether it was a real dinosaur or not and his response was priceless, "Well they made a toy out of it so it must be real." I have no more faith in children.
well, if there being fed info like this:

(so many things wrong with that series)
I can't blame you for not having faith in children

also about the crocodiles...what about some principals of Bergman's rule?
Quote:
 
Bergmann's rule is an ecogeographic principle that states that within a broadly distributed taxonomic clade, populations and species of larger size are found in colder environments, and species of smaller size are found in warmer regions.
Offline Profile Quote Post Goto Top
 
babehunter1324
No Avatar


I'm pretty sure Bergmann's rule only applies to Endotherms since those generate their own body heat (and as such they are benefited by having a larger volume relative to their surface which helps conserving their temperature), Ectotherms on the other hand depend on external sources of heat to warm up which makes it more complicated, in one hand a bigger surface relative to their volume (small size) would help to warm them up faster but it also would make them more susceptible to loose heat in cold climates.
Edited by babehunter1324, Jul 6 2015, 06:44 AM.
Offline Profile Quote Post Goto Top
 
Incinerox
Member Avatar
Āeksiot Zaldrīzoti

That is correct.

Marine iguanas are a good example of how it works. They spend all morning basking in the sun on the rocks, then they go into the sea to feed. How long they feed underwater for, and how deep they go, and how far away from shore they get is ENTIRELY dependent on how big the iguana in question is.
Offline Profile Quote Post Goto Top
 
Ulquiorra
Member Avatar


Paleop
Jul 6 2015, 02:29 AM
Paleodude
Jul 5 2015, 06:13 PM
It annoys me when I hear kids at Target say that Stegoceratops is their favorite dinosaur. I then asked him wether it was a real dinosaur or not and his response was priceless, "Well they made a toy out of it so it must be real." I have no more faith in children.
well, if there being fed info like this:

(so many things wrong with that series)
I can't blame you for not having faith in children
Atleast the Minmi in the ankylosaur episode had their eyes on the correct sides of their heads, instead of both on the same side. Why were the creators trying to teach children, that dinosaurs had flatfish-like skulls?
Offline Profile Quote Post Goto Top
 
Paleop
Member Avatar
Paleopterix

that just the tip of the iceberg....

All
1.volcano at start 2. overuse of palm trees 3. flatfish like skulls 4.pteranodon at opening sequence(implies it lived at the same time as t rex 3.pronated hands 5.wrong proportions 6. wrong skulls 7. wrong shapes altogether 8. dinosaurs are self aware

Brachiosaurus
1. tail is too long 2. body too short 3. neck held too high 4. wrong leg shape 5. 60 tons?! (too heavy) 6. 16 meters is too tall 7.eats grass

Dilophosaurus
1.200 MYA 2. theropods walk on 2 legs and eat meat. 3."Im the bigest meat eater alive, here in the Jurassic period" (should have said early Jurassic)

Dryosaurus
1.dryosaurus is from America not Tanzania

Minmi
1. they could not rear up like that 2. wrong legs

Daspletosaurus
1. lack of feathers 2. daspletosaurus would not jump that high, if at all 3. called dinosaurs "monsters" purely an understatement, as dinosaurs were something much different and less predictable...Animals

Stegosaurus
1.no beak? 2. neck position 3. stego could not sit like that(it would break it's but and tail 4. stego has broken legs and sun glasses 5.not even s. Armatus was the size of a bus 6.


I most certainly overlooked and missed several problems with the show
Offline Profile Quote Post Goto Top
 
CyborgIguana
Member Avatar


The "theropods walk on two legs" bit can at least be excused since we only discovered just how weird Spinosaurus was last year, and I'm A Dinosaur premiered in 2009 IIRC (back when Spinosaurus was still assumed to be proportioned like other spinosaurids). But indeed the rest is still completely inexcusable and moronic. And even in 2009, we knew that not all theropods were carnivores!
Edited by CyborgIguana, Jul 6 2015, 04:51 PM.
Offline Profile Quote Post Goto Top
 
Ignacio
Member Avatar
Ex Corrupt Staff

LOL this rant is one of the most moronic ones i've read in this thread in a long time. Complaining about cartoons that are meant to be for kids under 5 yo. Is kind of amusing actually.
Offline Profile Quote Post Goto Top
 
Serpyderpy
Member Avatar
Ambassador of The Little Guys™

Guys, seriously. Y'know, you could leave a children's cartoon alone and focus on more important things with your life? Just a thought? I am incredibly sorry that a child's mind isn't up to your standard on everything to do with palaeontology and thus you have no faith in them anymore. It's like they're too young to comprehend things properly. Who would've thought?

These cartoons are not hurting anyone. I'm sure the world isn't going to end if little Timmy learns something somewhat inaccurate on the subject. Maybe when the kids watching these are older they'll learn that it was wrong, but if everyone rips these apart, what the hell is going to get them into the subject to begin with? Websites and images and textbooks that are too hard for them to understand? Please. I know you all want dinosaurs to be represented better and everything, but attacking every single little thing is not going to work. At all. It just makes you seem rather shallow and pedantic.

Oh, and the eye thing? It's called art direction. A house style that their videos follow. Just sayin'.
Offline Profile Quote Post Goto Top
 
Furka
Member Avatar


No need to be snappy like that tho.

EDIT: this was for Ignacio.
Edited by Furka, Jul 6 2015, 05:10 PM.
Offline Profile Quote Post Goto Top
 
3 users reading this topic (3 Guests and 0 Anonymous)
Go to Next Page
« Previous Topic · Extinct Animals & Evolution · Next Topic »
Add Reply