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DrScottHartman's avatar

Feathered spinosaur-mimic

Austroraptor, the spinosaur-imitating basal dromaeosaur. I have to admit, I never thought I'd type those words together, but it goes to show that life really is stranger than fiction (fiction, after all, has to be believable).

This is another case where I couldn't in good conscience post the skeletal without the rigorous version. The actual completeness falls well below my threshold for not doing a skeletal, but it was commissioned for a museum display, so I've done what I can, pulling in data from Unenlagia and Buitreraptor to fill in the gaps. It's probably not crazy wrong, but for those of you who hate to have your artwork shown to be wrong by later discoveries: Draw at your own risk!
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© 2012 - 2021 DrScottHartman
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Megalotitan's avatar
is the femur broken as shown in your rigorous skeletal? i've looked at the supplementary figure showing it and it seems like that's the case, but for some reason both the original description and the 2012 paper describing the second specimen seem to treat it as being complete
DELIRIO88's avatar
Scott did you hear about the publication made by Currie and Paulina Carabajal?
There are some new infos concerning the animal's arms, the hand and the foot!
DrScottHartman's avatar
Yeah, and I just reread it after seeing you bring it up, but it doesn't require any changes (although I could expand the rigorous version to cover "all known material" I suppose - it would look less pathetic).
DELIRIO88's avatar
Good to know. Time for an Austroraptor live restoration! :D
DrScottHartman's avatar
Whoops, I was wrong - the forearms are even shorter it turns out. Guess I'll have to hop on that later today.
action-figure-opera's avatar
Where do you get the spinosaur-imitating descriptor from? I don't see anything spinosaurid in the bones or name.
DrScottHartman's avatar
The reduction of features associated with hyper-carnivory in favor of fish-eating, include the elongated and thin snout, and the teeth that are reduced in size but increased in number. Also, the preserved cervicals suggest a neck that doesn't have as strong of an S-curve as in "normal" dromaeosaurs, which again seems similar to spinosaurids.
action-figure-opera's avatar
That makes sense. I guess my confusion arose from the overall skeleton more closely resembling suchomimus or baryonyx, rather than spinosaurus.
DrScottHartman's avatar
Ah, I meant "spinosaurid", not Spinosaurus.
action-figure-opera's avatar
Indeed, I understand that by now.
PrimevalRaptor's avatar
This here is based on your reconstruction: [link] Of course I gave credit.
Great skeletal, BTW.
DrScottHartman's avatar
Sorry I didn't see this before, but that's very cool, and thanks for the credit :D
PrimevalRaptor's avatar
Well, no problem. ^^
dinosaurusbrazil's avatar
I will say what I said for :iconhyrotrioskjan:
"they lived in a place that the ecological niche of spinosaurs was available, so they could evoluted with any natural competitors".
BTW, good job and I loved this drawing.
Teratophoneus's avatar
I based this [link] on your skeletal reconstruction. I also provided a link to your pic here.
I think I made the head too small....
DrScottHartman's avatar
Teratophoneus's avatar
thanksa lot. Always an honour to hear that from you :)
sketcherjak's avatar
007access's avatar
dude i like your work but the dromaeosaurs killing claws look small and less dynamic
DrScottHartman's avatar
They seem to be reduced in other South American dromaeosaurs - and as a presumptive fisher (i.e. a really weird dromaeosaur) it most likely wasn't using them the way other dromaeosaurs did.

That said, they aren't known yet in Austroraptor, so if you wanted to give it Utahraptor-like foot long killing scythes I can't say you're definitely wrong, although I doubt it would be confirmed when more fossils are found.
Rafael-Albo's avatar
I love this animal.
DrScottHartman's avatar
I saw this animal presented at SVP years and years ago (not completely prepped out) in a presentation, and honestly at the time I thought they were mistaking an incomplete spinosaur for a giant dromaeosaur (at the time I believe they thought it was a giant troodontid). It's been fun to watch this bizarre animal make its way to publication.
Rafael-Albo's avatar
For me, its a spinosaurid.
it has all the characteristics
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