Carnivorous Ornithischians

[Balaur]

This a question I've had ever since I read about the bite marks on Psittacosaurus possibly from a heterodontosaur. Are there, or were there any carnivorous or predominantly carnivorous ornithischians? I find it very plausible, because there are herbivorous theropods, so why not carnivorous ornithischians? If any ornithischians are mostly carnivorous, I think it would be the heterodontosaurs. Of course, like herbivores today, all herbivores probably ate other animals, wether by accident (like hadrosaurs eating lizards on tree branches) or on purpose (like deer chasing and eating rabbits). So, what do you think?

[Brontozaurus]

There was a hypothesis that Muttaburrasaurus was at least partly carnivorous, based on its teeth. They're made for slicing and cutting, not grinding. Not sure if anyone supports this idea anymore though.

[Gryphoceratops]

I think it was Marc Witton a while back brought up the idea that ceratopids could have possibly eaten meat in addition to plants but it was just a thought no evidence to back it up really. 

To date, no ornithiscian has ever been found that shows dentition that appears to be adapted to eating just meat.

[amargasaurus cazaui]

This a question I've had ever since I read about the bite marks on Psittacosaurus possibly from a heterodontosaur. Are there, or were there any carnivorous or predominantly carnivorous ornithischians? I find it very plausible, because there are herbivorous theropods, so why not carnivorous ornithischians? If any ornithischians are mostly carnivorous, I think it would be the heterodontosaurs. Of course, like herbivores today, all herbivores probably ate other animals, wether by accident (like hadrosaurs eating lizards on tree branches) or on purpose (like deer chasing and eating rabbits). So, what do you think?

Yes, the authors of the paper seemed very certain the bite marks were either from a Tianyulong or similar canine tusk typed toothed animal. The odd thing for me in reading the paper was since the time periods dont match up that well it was not likely Tianyulong, so it had to be a similar animal

[Balaur]

This a question I've had ever since I read about the bite marks on Psittacosaurus possibly from a heterodontosaur. Are there, or were there any carnivorous or predominantly carnivorous ornithischians? I find it very plausible, because there are herbivorous theropods, so why not carnivorous ornithischians? If any ornithischians are mostly carnivorous, I think it would be the heterodontosaurs. Of course, like herbivores today, all herbivores probably ate other animals, wether by accident (like hadrosaurs eating lizards on tree branches) or on purpose (like deer chasing and eating rabbits). So, what do you think?

Yes, the authors of the paper seemed very certain the bite marks were either from a Tianyulong or similar canine tusk typed toothed animal. The odd thing for me in reading the paper was since the time periods dont match up that well it was not likely Tianyulong, so it had to be a similar animal

Eaxctly my thought. Also, Heterodontosaurs seem to survive only a little bit before the age of Yixian, do does this mean they survive, clingong onto thosmstrange ecosystem?

[HD-man]

This a question I've had ever since I read about the bite marks on Psittacosaurus possibly from a heterodontosaur.

What paper was that?

[Balaur]

It's back in the Psittacosaurus thread I think. It's the same one that talked about its colouration.

[HD-man]

It's back in the Psittacosaurus thread I think. It's the same one that talked about its colouration.

Do you know the name of the paper or the page of the thread in which it appears?

[Patrx]

It's back in the Psittacosaurus thread I think. It's the same one that talked about its colouration.

Do you know the name of the paper or the page of the thread in which it appears?

The paper is called "The integument of Psittacosaurus from Liaoning Province, China: taphonomy, epidermal patterns and color of a ceratopsian dinosaur." (Lingham-Soliar T, Plodowski G.) It was first mentioned in the "Anything Psittacosaurus" thread:

And we now have coloring and patterning for Psittacosaurus apparently !!!! Have to love this information......http://www.ncbi.nlm.nih.gov/pubmed/20354675?report=abstract
Would love to get my little psitto-claws on the full version of this if anyone knows how or where.....Dinoguy or HD man perhaps?

[HD-man]

The paper is called "The integument of Psittacosaurus from Liaoning Province, China: taphonomy, epidermal patterns and color of a ceratopsian dinosaur." (Lingham-Soliar T, Plodowski G.) It was first mentioned in the "Anything Psittacosaurus" thread:

And we now have coloring and patterning for Psittacosaurus apparently !!!! Have to love this information......http://www.ncbi.nlm.nih.gov/pubmed/20354675?report=abstract
Would love to get my little psitto-claws on the full version of this if anyone knows how or where.....Dinoguy or HD man perhaps?

I thought so, but wanted to make sure. Many thanks for confirming.

Long story short, Lingham-Soliar is a BANDit ( http://qilong.wordpress.com/2012/02/21/canadian-amber-fin-tailed-dinosaurs-and-a-despairing-blogger/ ), so anything he says about dinos should be taken w/a grain of salt (if that).

[amargasaurus cazaui]

While I readily see your point about the author being a Bandit, I am not sure that alters the purpose or conclusions drawn for this particular paper. The fact his co-author has done most of the prep for this specimen further gives some strength to his conclusions. In this paper he chose not to get mired into a debate about the quills and their actual nature which perhaps is a good thing given his views.