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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,338 Views)
Furka
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Okay, from this moment on I'll call Dunkleosteus Giant Beaverfish for the rest of my life.

BTW IIRC Dunkleo's tail is missing, but are there any theories on its shape beside the overused eel-like one ?
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TheToastinator
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A piece of toast and a terminator.

Furka
Nov 26 2015, 08:00 PM
Okay, from this moment on I'll call Dunkleosteus Giant Beaverfish for the rest of my life.

BTW IIRC Dunkleo's tail is missing, but are there any theories on its shape beside the overused eel-like one ?
Actually, everything besides the head is missing. :P

Maybe it had a shark-like tail.
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CyborgIguana
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Didn't the Dunkleosteus in BBC's Sea Monsters have a shark-like tail (or at least a not eel-like one)?
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Jules
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Mihi est imperare orbi universo

It wasn't eel-like per se, but still:

Posted Image
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Paleodude
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ex-Krampus

What are the differences between the two species of Diplocaulus and their approximate lengths? Is it generally accepted to have the membrane between the limbs as seen in Okeanos' Diploceraspis?
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Paleop
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Paleopterix

what was the largest known Crocodylomorph from hell creek?

thanks :)
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BossMan, Jake
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Son of God

Posted Image

After seeing this image it begs a good question. Could it be possible that South America was connected to Antarctica by the end of the Cretaceous? And further mor how improbable would it be to say that Carnotaurus could have lived in Antarctica?
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CyborgIguana
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A speculative piece of paleo-art (which even then the only arguable link to Antarctica is the ankylosaur) doesn't exactly constitute scientific evidence.
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Brach™
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hi

Paleop
Nov 28 2015, 10:51 AM
what was the largest known Crocodylomorph from hell creek?

thanks :)
The described Crocodylomorphs are
Borealosuchus 9ft long
Brachychampsa 9ft long
Thoracosaurus 14ft long

Theres probably a lot of material not described since Hell Creek is like a giant bin of bones but I don't think their Crocodylomorphs get much bigger than they do today.
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babehunter1324
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Aren't the 9 feet Brachychampsa post K/Pg (Danian) individuals, tough? Most sources identified the Maastritchian species as generally around 6 feet at adult size (likely due to more competition and also because the climate was most likely colder than in the post "nuclear winter" early Paleocene).

One thing is for sure, Thoracosaurus was the biggest crocodilian known from the formation, post or pre K/Pg event, it still wasn't huge tough since as previously explained Hell Creek's climate might not had been all that suited for Crocodilians as it is usually claimed...
Edited by babehunter1324, Nov 28 2015, 07:46 PM.
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Brach™
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hi

babehunter1324
Nov 28 2015, 07:45 PM
Aren't the 9 feet Brachychampsa post K/Pg (Danian) individuals, tough? Most sources identified the Maastritchian species as generally around 6 feet at adult size (likely due to more competition and also because the climate was most likely colder than in the post "nuclear winter" early Paleocene).

One thing is for sure, Thoracosaurus was the biggest crocodilian known from the formation, post or pre K/Pg event, it still wasn't huge tough since as previously explained Hell Creek's climate might not had been all that suited for Crocodilians as it is usually claimed...
Thats likely. I hadn't been aware there was a difference in size between Maastrichtian and Danian Brachychampsa.
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Paleop
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Paleopterix

would hell creek (at the time saurian takes place) ever get snowfall?

also i'm looking for a fact check, is emarginochelys cretacea the largest hell creek softshell turtle? and are there any sizeestimates?
thanks for answering my qestions :)
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TheToastinator
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A piece of toast and a terminator.

Paleop
Nov 29 2015, 04:29 PM
would hell creek (at the time saurian takes place) ever get snowfall?
I heard it had a temperate climate, so it might've had a light snowfall every now and then.
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Brach™
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hi

TheToastinator
Nov 29 2015, 04:33 PM
Paleop
Nov 29 2015, 04:29 PM
would hell creek (at the time saurian takes place) ever get snowfall?
I heard it had a temperate climate, so it might've had a light snowfall every now and then.
I think it would depend on the elevation. I'm not speaking with certainty though.
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54godamora
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what sea reptiles that had flippers excluding turtles could clamber onto land?
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