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
Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,447 Views)
CyborgIguana
Member Avatar


Tianyulong is a heterodontosaur IIRC, not a ceratopsian.
Offline Profile Quote Post Goto Top
 
Incinerox
Member Avatar
Āeksiot Zaldrīzoti

Tianyulong was MILLIONS of years away from even the most primitive marginocephalian. Interesting note: While theropods seem to gain filamentous integument over their evolutionary history, ornithischians seem to generally LOSE it. Think about it. Name one derived clade (like, tips of the twigs of the ornithiscian family tree) which kept the spiny quills of Tianyulong or Kulindadromeus.

Poses interesting questions.
Offline Profile Quote Post Goto Top
 
BossAggron
Member Avatar
Formerly Dilophoraptor

could the the little spines on Ornithopods could be derived integument?
Offline Profile Quote Post Goto Top
 
Yi Qi
Member Avatar


Dilophoraptor
Nov 10 2014, 10:42 PM
could the the little spines on Ornithopods could be derived integument?
Hardly, they were derived osteoderms if anything.
Offline Profile Quote Post Goto Top
 
Jules
Member Avatar
Mihi est imperare orbi universo

CyborgIguana
Nov 10 2014, 08:06 PM
Just...resist the common temptation to give fluff to absolutely everything. That's the best advice I can give for now. :P
That's already lost on me xD
Offline Profile Quote Post Goto Top
 
Even
No Avatar


Well, there's still Martyniuk's opinion, which says that all reticulate and tuberculate scales are really feathers in various (usually arrested) development...
Offline Profile Quote Post Goto Top
 
CyborgIguana
Member Avatar


Yes, but it's not like the exact identity of the integument would make the dinosaurs that bore them look any different. Even if those scales are derived feathers, it still doesn't change the fact that the living animal would still most likely have appeared scaly rather than feathery.
Edited by CyborgIguana, Nov 11 2014, 01:47 PM.
Offline Profile Quote Post Goto Top
 
Swimming Spaghetti Monster
No Avatar


Did the protofeathers (the ones possessed by LUCA of both dinosaur groups, because if I understand correctly Kulindadromeus' feathers were derived from the same integument as theropod ones) have similar thermoregulation properties to derived feathers?
Offline Profile Quote Post Goto Top
 
Swimming Spaghetti Monster
No Avatar


EDIT: Repeated post.
Edited by Swimming Spaghetti Monster, Nov 11 2014, 03:21 PM.
Offline Profile Quote Post Goto Top
 
Yi Qi
Member Avatar


Kulindadromeus' s structures have no relation to theropod feathers, they are another kind of structure altogether.
Offline Profile Quote Post Goto Top
 
Swimming Spaghetti Monster
No Avatar


So Ornithopod scales are ancestral, rather than secondary?
Offline Profile Quote Post Goto Top
 
Incinerox
Member Avatar
Āeksiot Zaldrīzoti

Most likely, yes.
Offline Profile Quote Post Goto Top
 
Posted Image Flish
Member Avatar


Is there evidence that Caenagnathoid crests are featherless or is this just something people do a lot of for some reason?
Offline Profile Quote Post Goto Top
 
DinoBear
Member Avatar


Austroraptor
Nov 11 2014, 03:47 PM
Kulindadromeus' s structures have no relation to theropod feathers, they are another kind of structure altogether.
Care to expand upon that? Haven't heard of something like that
Offline Profile Quote Post Goto Top
 
Yi Qi
Member Avatar


DinoBear
Nov 11 2014, 04:23 PM
Austroraptor
Nov 11 2014, 03:47 PM
Kulindadromeus' s structures have no relation to theropod feathers, they are another kind of structure altogether.
Care to expand upon that? Haven't heard of something like that
The scientists on the original news article compared them and found them to be similar to Tianyulong's "fuzz", from what i heard and that one was analysed and found out to be unlike theropod feathers IIRC.
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