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A real deceptive reptile

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By ScottHartman   |   
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© 2013 - 2020 ScottHartman
Apatosaurus ajax is the type species of Apatosaurus ("deceptive reptile"), so if someone ever manages to resurrect Brontosaurus (which is tied to A. excelsus), this animal won't be changing its name. The skeletal is a long-needed revision to the skeletal I did for a paper I and colleagues published on Supersaurus back in 2007 (we subsequently dropped it from the final paper).

The reconstruction is based on NSMT-PV 20375, a specimen on display in Tokyo (thankfully I had the opportunity to made a couple trips to see it). Like the type specimen it's not full grown, and it's probable that the animal would have "grown into" its fairly long limbs as it got larger. How much larger? Possibly quit a bit larger, as most of the largest reported specimens have been at least tentatively referred to A. ajax, although it's hard to be certain without proper descriptions.

Despite this, it seems evident that A. ajax wasn't as robust as A. excelsus, and it wasn't close to being the overbuilt steroid-user that A. louisae was [link]

Interestingly it also seems to retain the smaller pelvis and found in Supersaurus [link] although whether this has any phylogenetic value isn't clear.

Either way, this is the species that should actually be driving our understanding of Apatosaurus, and that makes it pretty darned interesting in my book.
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Comments77
anonymous's avatar
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Atlantis536's avatar
Atlantis536Hobbyist Traditional Artist
What is the difference between this and your 2006 version?
ScottHartman's avatar
ScottHartmanProfessional Digital Artist
I reposed it to my current walking posture (away from the one Greg Paul uses), and updated the silhouette to reflect better knowledge about soft-tissue reconstruction, including the depth of the base of the tail and over the top of the neck.
tigris115's avatar
Do we have enough of the OMNH apatosarine to say whether or not it was either a blown up version of your skeletal or significantly different?
RizkiusMaulanae's avatar
RizkiusMaulanaeStudent Traditional Artist
Any chance you will post the giant oklahoma apatosaurus ? It looks large af
RizkiusMaulanae's avatar
RizkiusMaulanaeStudent Traditional Artist
Who doesn't like a gigantic long necked neckhammer with supersonic tail ? ;)
paleosir's avatar
paleosirHobbyist General Artist
People who suck=P (Razz) 

JK
RizkiusMaulanae's avatar
RizkiusMaulanaeStudent Traditional Artist
No, JW

They made indominus killing the apatosaurs
paleosir's avatar
paleosirHobbyist General Artist
yeah
Andresome's avatar
Gosh. This is my favorite dinosaur of all  Sauropoda. The history and everything about it absolutely intrigues me to no end. Can't wait to learn more about it and its skeletal features when I study vertebrate paleontology. 
ScottHartman's avatar
ScottHartmanProfessional Digital Artist
It's a pretty cool critter. Good luck!
kingspacegodzilla94's avatar
kingspacegodzilla94Student Artisan Crafter
Yup they did Brontosaurus -( excelsus )  is back :happybounce:  and also .... are you making or planning  to do a Agustinia ligabuei  skeletal reconstruction Meow :3 
ScottHartman's avatar
ScottHartmanProfessional Digital Artist
Agustinia is out until a more complete specimen is found.
kingspacegodzilla94's avatar
kingspacegodzilla94Student Artisan Crafter
Thumbs Up  Ok , Thanks for the info.La la la la  , .... is that the same case with Saltasaurus  :-? (Confused)  I've  try to make an accurate restored version of it but I can find an official skeletal reconstruction :( (Sad)   
ScottHartman's avatar
ScottHartmanProfessional Digital Artist
No Saltasaurus has enough remains to restore. Greg Paul published a reconstruction in his Field Guide to Dinosaurs. 
kingspacegodzilla94's avatar
kingspacegodzilla94Student Artisan Crafter
Oh ok thank you , By the way can I have your permission to use your skeletal reconstruction for some dinos I'm planning to make ,  of course I will make a mention to you and give you credit for your job  .
ScottHartman's avatar
ScottHartmanProfessional Digital Artist
That's fine with me :)
kingspacegodzilla94's avatar
kingspacegodzilla94Student Artisan Crafter
Thanks a lot I am a dummy!   I will let you know when I post one of them :D (Big Grin) 
thediremoose's avatar
A real deceptive reptile indeed, since it was neither an Apatosaurus nor a Brontosaurus to begin with.
ScottHartman's avatar
ScottHartmanProfessional Digital Artist
As it turns out.
JonaGold2000's avatar
JonaGold2000Hobbyist Traditional Artist
Someone managed to ressurect Brontosaurus
Steveoc86's avatar
What do you think of Tschopp et.al. conclusion that this specimen belongs to a more basal apatosaur rather than Apatosaurus ajax? Do you have any plans to restore the holotype of A. ajax?
ScottHartman's avatar
ScottHartmanProfessional Digital Artist
It doesn't seem too crazy to me. I would love to restore the type of A. ajax, but I have no idea when I will be able to get around to that.
Steveoc86's avatar
Looking at the recent diplodocid growth paper, this 'looks' quite juvenille; long legged with small vertebra.
anonymous's avatar
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