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March 17, 2014
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Tawa - the perfect intermediate by ScottHartman Tawa - the perfect intermediate by ScottHartman
Tawa hallae, the primitive theropod that fills in the gap (both morphologically and phylogenetically) between herrerasaurs and coelophysoids. I'll have a lot more to say about Tawa in the future, but in general I'll say that it shows the order of character acquisition in early theropods was not what I (and I don't think many others) expected.
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:iconrandomosaur:
Randomosaur Featured By Owner Aug 16, 2014
Creationists: BUT IT'S STILL A DINOSAUR!!!!1111111
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:iconaction-figure-opera:
action-figure-opera Featured By Owner Jul 26, 2014
herrerasaurus = blacksmithlizard
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:iconscotthartman:
ScottHartman Featured By Owner Jul 28, 2014  Professional Digital Artist
...you lost me on that one.
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:iconaction-figure-opera:
action-figure-opera Featured By Owner Jul 29, 2014
Herrera is a Spanish name that means "iron worker", which is more commonly referred to in English as a blacksmith.
The root of Herrera is "hierro", which is iron in Spanish. "Fierro" is another Spanish word for iron; from it comes the name Ferrera, which also means "iron worker", or "blacksmith".

herrerasaurus = blacksmithlizard

However, I know that when it comes to this dinosaur, it's meant as a way to honor some scientist whose last name is Herrera.
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:iconaspidel:
aspidel Featured By Owner Jun 4, 2014  Hobbyist Traditional Artist
Very good news, and excellent work as always.
Two questions about it:
- Is there some evidence of dinofuzz on such basal saurischians? I've seen several restorations with dionofuzz.
- The environment: Dry? Ancient forest? Dry season + rain season? So I wouldn't make too many mistakes.
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:iconscotthartman:
ScottHartman Featured By Owner Jun 6, 2014  Professional Digital Artist
No direct evidence of fuzz in basal saurischians. The inference is based on how similar basal ornithischian fuzz (e.g. heterodontosaurid) is to known coelurosaur fuzz. The Late Triassic in general was very arid (and seasonal), but the Chinle was a bit wetter, with enough seasonal rainfall to support substantial conifer forests.
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:iconaspidel:
aspidel Featured By Owner Jun 6, 2014  Hobbyist Traditional Artist
Yes, I've seen about that fuzzy heterodontosaurid. Looks like a fun critter.
I remember the Chinle Fm. from Doug Henderson's artwork, he painted some very nice scenes indeed, with Coelophysis packs and such.
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:iconscotthartman:
ScottHartman Featured By Owner Jul 28, 2014  Professional Digital Artist
Doug's Coelophysis work is really fantastic.
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:iconaspidel:
aspidel Featured By Owner Jul 29, 2014  Hobbyist Traditional Artist
Yes, those are the pieces I prefer from him. With those warm colors...
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:iconpedrosalas:
PedroSalas Featured By Owner May 1, 2014  Hobbyist Traditional Artist
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:iconhellraptor:
Hellraptor Featured By Owner Apr 1, 2014  Hobbyist Digital Artist
Your skeletals are so usefull but still i have miore to lean with anatomy. I so wanna be better with my dinosaur art. thanks you for sharing this and other helpfull skeletalls.
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:iconscotthartman:
ScottHartman Featured By Owner Apr 1, 2014  Professional Digital Artist
You're welcome, and best wishes on refining your craft :)
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:iconhellraptor:
Hellraptor Featured By Owner Apr 2, 2014  Hobbyist Digital Artist


Thanks :)  I might drop by more oftern if i have questions about dinosaurs, i know alot about them but i wanna make my future, upcoming dinosaur pics more accurate. I also think about do them in this simple style like my updated jp pics,  but with some more dark shading

 

 hellraptor.deviantart.com/art/…


Could it work


 

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:iconthedinorocker:
thedinorocker Featured By Owner Mar 18, 2014
Fabolous !
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:iconthediremoose:
thediremoose Featured By Owner Mar 17, 2014
I still don't understand how people can claim that there are no transitional fossils (and ask not if there are any, but why there aren't any, as if the supposed lack of transitional fossils were an established fact) in this day and age.
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:iconscotthartman:
ScottHartman Featured By Owner Mar 18, 2014  Professional Digital Artist
I think the whole thing is a misconception - a single fossil (or species) can't be transitional by itself, it's a series of fossils (or fossil species) that show transition. No paleontologist uses the term "transitional fossil" in a scientific sense. I think it's simply an intentionally misleading way of construing the data (like other invented concepts like dividing science into "observational" and "historic" branches, or claiming that macroevolution is between "kinds" rather than species).
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:iconzegh8578:
ZEGH8578 Featured By Owner Mar 17, 2014
Nice, and cool head. Can totally see that thing clasping its jaws down on quick squirmy stuff
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:iconorionide5:
Orionide5 Featured By Owner Mar 17, 2014
Those backwards-order finger lengths on early theropods are always bizarre. So you think herrerrasaurs are probably theropods?
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:iconscotthartman:
ScottHartman Featured By Owner Mar 17, 2014  Professional Digital Artist
I do now.
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:iconlikosaurus:
Likosaurus Featured By Owner Mar 17, 2014  Professional Filmographer
Amazing work. So roughly ~2 metres? 50kg or something?
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:iconpilsator:
pilsator Featured By Owner Mar 17, 2014  Hobbyist Traditional Artist
I'd guess it would be far more lightweight (closer to 20 or less), but I'm happy to bump this because I'm interested too ;)
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:iconlikosaurus:
Likosaurus Featured By Owner Mar 19, 2014  Professional Filmographer
Maybe 30. 50 is acually pretty high.
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:iconscotthartman:
ScottHartman Featured By Owner Mar 17, 2014  Professional Digital Artist
Looks like a bit over 2 meters (I'm eyeballing, but closer to 2.25m). I haven't done a GDI on it, but I'd think in the 20-30 kg range.
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:iconpilsator:
pilsator Featured By Owner Mar 17, 2014  Hobbyist Traditional Artist
Beautiful. I'm amazed just how large its arms/hands are, then again, herrerasaurids on the saurischian side and heterodontosaurids on the ornithischian...
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:iconscotthartman:
ScottHartman Featured By Owner Mar 17, 2014  Professional Digital Artist
Good catch, and you're on the right track. The real question is "why?" - but for that you'll have to wait until some papers from my thesis start coming out in another year or so.
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:icondarklord86:
darklord86 Featured By Owner Mar 17, 2014
Great job!
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:icondinobirdman:
DinoBirdMan Featured By Owner Mar 17, 2014  Student Artist
This is cool!
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:iconjdailey1991:
Jdailey1991 Featured By Owner Mar 17, 2014
Was it really the forerunner of all tyrannosaurs?
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:iconscotthartman:
ScottHartman Featured By Owner Mar 17, 2014  Professional Digital Artist
Tawa? It's down near the base of the theropod tree, so it's the forerunner of almost all theropods more advanced than herrerasaurids.
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:iconmalcolmraptor:
Malcolmraptor Featured By Owner Mar 17, 2014  Hobbyist General Artist
Just a disgusting nitpick: I believe we should use words like "forerunner" (let alone "ancestor") with caution, since maybe it could lead to the impression that we know that, say, neotheropods evolved literally from Tawa. Just sayin' :P
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:iconscotthartman:
ScottHartman Featured By Owner Mar 17, 2014  Professional Digital Artist
I actually considered that, but the dictionary definition for the word is: "one that precedes and indicates the approach of another", which seems completely appropriate (and rather specifically does NOT indicated direct descendance). There are so few words left that don't give off the wrong impression that I'm not willing to sacrifice this one.
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:iconmalcolmraptor:
Malcolmraptor Featured By Owner Mar 18, 2014  Hobbyist General Artist
Fair enough.
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:iconjdailey1991:
Jdailey1991 Featured By Owner Mar 17, 2014
So who really did begin the tyrannosaur line?  And when?
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:iconscotthartman:
ScottHartman Featured By Owner Mar 17, 2014  Professional Digital Artist
Mid-Late Jurassic protoceratosaurids like Guanlong and Protoceratosaurus are the earliest known tyrannosauroids.
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