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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,351 Views)
BossMan, Jake
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Son of God

I think primative species like plesiosaurus could have come in land at least part of the time

Also since Siats and potentially Neovenator have been reclassified as a meagratorids can we safely assume they were distant cousins to T-Rex?
Edited by BossMan, Jake, Oct 12 2015, 02:44 PM.
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CyborgIguana
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BossMan, Jake
Oct 12 2015, 02:41 PM
I think primative species like plesiosaurus could have come in land at least part of the time
What gives you that idea?

Also AFAIK Neovenator is still an allosauroid.
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BossMan, Jake
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Son of God

They were primitive they may have gone to land on rare occasions to maybe escape predators until some got larger
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Fluffs
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Pull my finger!

And where is your proof for that?
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Incinerox
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Āeksiot Zaldrīzoti

Going back to the pterosaur thing, most of their air sacs, including their lungs, were in the front half of their chests, and along the wings, alongside a very lightly built skull. Which is why Witton's pterosaur floating mechanism works - their wings have inbuilt flotation devices.

As for plesiosaurs going on land, none we know of, not Plesiosaurus, not any we have identified, was land capable. Though there would have had to have been a transitional phase where species along that line would have been capable of returning to land, but it's nothing we've found in the fossil record as of yet. We don't know if they were birthing in water while they were still land capable, or whether they returned to land to lay eggs, or if they came to land to birth live young etc. I doubt we'll get our hands on this kind of data for a long time as well, since we don't even know where to look for the right fossil beds to even come across the right fauna to check out.

And Neovenator was not reclassified. We don't know about Siats yet, but it has interesting implications either way. Neovenator's a solid allosauroid though. None of its anatomy matches up with the likes of Megaraptor, Aerosteon or Australovenator. Siats is known from a partial hip and upper leg and some scattered vertebrae. Nothing to put it anywhere solid. Though, if it turns out to be a megaraptorid, it makes my hypothesis that dryptosaurids are of that group all the more interesting. Though I'll have to get my hands on actual papers to test it out.
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BossMan, Jake
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Son of God

What types of animals lived with purrusaurus? And did spinosaurus and sarcosuchus co-exsist because I know sarcosuchus lived with suchomimus about 12-18 million years prior
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CyborgIguana
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Nope, Sarcosuchus was extinct by the time Spinosaurus appeared AFAIK. 12-18 million years would be a fairly lengthy period of time for a single genus to persist.
Edited by CyborgIguana, Oct 12 2015, 07:21 PM.
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BossMan, Jake
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Son of God

Ah so Planet dinosaur was wrong. Not surprised
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

BossMan, Jake
Oct 12 2015, 07:13 PM
What types of animals lived with purrusaurus?
La Venta Formation
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Deviljho
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To lead the discussion tho another topic ;) .....

What would happen if some living dinosaurs will be discovered one day? :o ;)

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Jules
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Mihi est imperare orbi universo

Nothing much, probably.

Posted Image
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Deviljho
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maybe :D or maybe much ;) no one knows that :jawdrop: ......
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CyborgIguana
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I think you missed his point: that we DO have living dinosaurs already. :P
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BossMan, Jake
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Son of God

It's also highly improbable that a modern dinosaur would look anything like it's more recognizable ancestors.
A Trex in our time for example could look like this:
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CyborgIguana
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Ummm...no, there's virtually no way a tyrannosaurid would evolve to look ANYTHING like that. A pseudosuchian or an abelisaurid maybe, but definitely not a T. rex (not that we would even call it a T. rex anymore).
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