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Extinct Animal Questions
Topic Started: Nov 26 2013, 10:24 PM (193,336 Views)
Brach™
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hi

Incinerox
Dec 1 2015, 06:09 PM
Braqistan
Dec 1 2015, 04:01 PM
Rockypockypuff
Dec 1 2015, 02:30 PM
This have been bothering me...

Did the Tyrannosaurus rex have "lips" or were their upper teeth visible (kinda like this: http://vignette3.wikia.nocookie.net/jurassicpark/images/f/fe/T_rex_male_tlw_by_manusaurio-d6ilbfy.jpg/revision/latest?cb=20140103204938 )? Which would make most sense, juding by skeleton finds and now living animals?
It's pretty hard to say for sure. There's nothing that suggests they did or didn't have lips. The problem with looking to extant life for inference is that the extant archosaurs we have to look at have adaptations that would negate the need for lips. (no teeth, aquatic life styles).
They had lips.

You can tell based on the size and distribution of pores along the jaw margins of dinosaur maxillae, premaxillae and dentary bones. Those of most theropods, and indeed most dinosaurs with teeth suggest that they had extensive soft tissues lining their jaws, much like those in modern squamates actually. Likely textured differently but there's that's not relevant. That's a different study entirely.
Ah good. I wasn't aware of that. Last time I broached this subject at all was with TTR years ago.
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BossMan, Jake
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Son of God

How far north did Eremotherium make it? And what was the difference between them and their South American cousins?
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Incinerox
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Āeksiot Zaldrīzoti

One species was found only in Florida.

The other was one species that stretched from Brazil to South Carolina.

Which answers the second question with the fact that they were exactly the same as their South American representatives.
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54godamora
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what are the colors of the coelophysis in WWD?
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Paleop
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Paleopterix

Posted Image
cream (FFFFCC)
cinnabar (83831F)
olive green(E44D2E)
dark brown (2C2416)
that should be all of them (in hexadecimal too)
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54godamora
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what does hexidecimal mean?
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Rudyn
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Are Lavocatavis and Eleutherornis really African and European memebers of Phorusrhacoidea family or convergent evolution?
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TheToastinator
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A piece of toast and a terminator.

What animals coexisted with Mosasaurus hoffmanni in Europe?
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Dino Keeper
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The Man Your Man Could Smell Like

I'm a little out of the loop on where the Spinosaurus finds went, so... how small or big are its legs, really?
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CyborgIguana
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The answer at the moment seems to be that we just don't know.
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saurianne
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Here's an out-of-the-ordinary one:

Does anyone know what year Mammuthus became a genus?

I ask because I recently came into possession of an old paleontology textbook, and it had a drawing of a Columbian mammoth labelled "Elephas columbi"

It also said in the dinosaurs section that sauropods were aquatic so I know it's pretty old, I'm just trying to figure old just how old.
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Acinonyx Jubatus
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I AM THE UNSHRINKWRAPPER!

saurianne
Dec 7 2015, 06:00 PM
Here's an out-of-the-ordinary one:

Does anyone know what year Mammuthus became a genus?

I ask because I recently came into possession of an old paleontology textbook, and it had a drawing of a Columbian mammoth labelled "Elephas columbi"

It also said in the dinosaurs section that sauropods were aquatic so I know it's pretty old, I'm just trying to figure old just how old.
Well, according to Wikipedia, Joshua Brookes first used the name Mammuthus borealis in 1828. However, the Columbian Mammoth was still placed in the genus Elephas until the early 1900s; then it underwent several taxonomic changes under the genera of Archidiskodon, Metarchidiskodon, Parelephas, and Mammonteus, until it and all other mammoth species were finally assigned to Mammuthus in the 1970s.
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Incinerox
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Āeksiot Zaldrīzoti

Dino Keeper
Dec 7 2015, 05:46 PM
I'm a little out of the loop on where the Spinosaurus finds went, so... how small or big are its legs, really?


Sereno and Ibrahim's findings are still legit. Other parts of their reconstruction were questioned since - the neck which was attributed to the genus Sigilmassasaurus turns out to be a legitimate genus vastly different from Spinosaurus itself. With that in mind, the presence of potentially at LEAST two genera in Kem Kem have challenged the validity of Sereno and Ibrahim's restoration, since much of it was restored from isolated remains. The legs, pelvic girdle, tail and vertebrae of their specimen, in tandem with Stromer's original findings, confirm that at least Spinosaurus had tiny legs.

saurianne
Dec 7 2015, 06:00 PM
Here's an out-of-the-ordinary one:

Does anyone know what year Mammuthus became a genus?

I ask because I recently came into possession of an old paleontology textbook, and it had a drawing of a Columbian mammoth labelled "Elephas columbi"

It also said in the dinosaurs section that sauropods were aquatic so I know it's pretty old, I'm just trying to figure old just how old.


This is an unusual one since people were actually calling them mammoths for centuries even before paleontology was a thing. More specifically, early Europeans referred to their remains as "maimanto" in the 1600s. Local people referred to them as "Mammon's Horns" well into the 18th and maybe 19th centuries too. However, the origins for these words is unclear and are perhaps FAR older.

So why they even felt the need to call it "Elephas" in the first place beats me. The first official use of Elephas in reference to these extinct elephants occurred in 1799 by a guy called Johann Friedrich Blumenbach, shortly after Cuvier proposed that these elephants were indeed extinct relatives of modern Asian elephants (an extremely novel concept for the 1700s). However, it was in 1828 when a guy called Joshua Brookes had referred to some remains in his collection as Mammuthus borealis, which would one day become Mammuthus primigenius, which was apparently enough to spark a redescription and the establishment of a new genus.

EDIT: DAMNIT I WAS NINJA'D.
Edited by Incinerox, Dec 7 2015, 06:25 PM.
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BossMan, Jake
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Son of God

What were some examples of Cenozoic "Crocodilians" that would have mostly resembled large rauisuchia? (By resemble I mean skull shape ore then anything)

And have the fossils of the Kenyan Abelisaur and 15 prosauropod been identified/described yet?
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Incinerox
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Āeksiot Zaldrīzoti

1) Sebecids.

2) Nope.
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