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Mesozoic Blitzkrieg

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One interesting feature about the Langenberg quarry is that it not only very well preserved three dimensional fossils of many vertebrates, especially a whole herd of Europasaurus holgeri, but also some tracks. Among these are some which are of greater interest for the whole understanding of this ecosystem: Theropod tracks, some longer than 45 cm, so definitely, not the dwarfed monsters you would expect on a island populated by sauropods rarely larger than a horse. But interestingly there are no Europasaurus remains above the (now mostly lost) layers which contained the theropod tracks.
The authors of a new paper about these footprints suggest therefore that we maybe have here the documents of an biologic invasion. It's possible that a new land bridge formed during the late Jurassic and connected the Langenberg habitat with an much bigger european island. The faunal exchange brought larger, maybe 8 meters long (hip height 1,8-1,9 m), potential megalosaurids, similar to Torvosaurus in reach of the small Europasaurs. The possible outcome is visible here. 
Also interesting is the method the authors used, because the fossils are now part of the quarries product spectrum they were only able to work with photos made shortly before the blasting started. But thanks to modern techniques like Photogrammtery we can still analyse these lost rocks.

I was asked to produce some quick artwork for the press release of this fascinating paper and could hardly say no ;)
here the open access paper by Jens N. Lallensack, P. Martin Sander, Nils Knötschke, and Oliver…
And here the (german so far) press article with my art:…

P.s. The differences between male and female Europasaurus are pure speculation.
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anonymous's avatar
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Whitedragon66's avatar
your theropod there is a Wiehenvenator is that correct
Hyrotrioskjan's avatar
Nope, it's more based on Torvosaurus, I didn't know Wiehenvenator was worked on during that time... and Wiehenvenator is from the Middle Jurassic, this one
is a Late Jurassic torvosaur ;)
Whitedragon66's avatar
ah alright just giving a scientific guess is all forgot about the time difference lol :)
AnonymousLlama428's avatar
Like Christians getting thrown to lions.
Majestic-Colossus's avatar
Wasn't Europasaurus around 30 feet long? Nice :) (Smile) 
Hyrotrioskjan's avatar
More like 6 to 7m, with the largest specimens maybe around 9
Kagansaurus's avatar
The poor things are defenseless.
TheDubstepAddict's avatar
Wyatt-Andrews-Art's avatar
I think these Theropods are way overpowered in this environment. I wonder how Europasaurus managed to survive here.
Flameal15k's avatar
Wyatt-Andrews-Art's avatar
Yeah I figured that out
Kalia24's avatar
Is it a coincidence that when I looked at these Europasaurus, I thought about an ostrich?
Hyrotrioskjan's avatar
That's a coincidence :P
Kalia24's avatar
Perhaps it's because of the head shape...
Btw - that comparison to the human silhouette is a really good thing there. I guess that like many other laymen in prehistoric subjects I think of most of the dinosaurs as giants (except for a few that are chicken-size and about human-size raptors) - and these are not much bigger than horses nowadays...
Dinodc98's avatar
This is super intreaguing what was the mesazoic island called, I need to research this more! By the way this is an awesome drawing!
Hyrotrioskjan's avatar
Thank you =)

This special island has no name (yet) but you can find some papers about this when you search for the Langenberg quarry.
Dinodc98's avatar
Thanks I look forward to reading about.
FallenHallows's avatar
Is the theropod megalosaurus?
Hyrotrioskjan's avatar
It's partly based on Megalosaurus and Torvosaurus.
FallenHallows's avatar
Oh I always depicted torvosaurus taking on apatosaurus or diplodocus.
Terizinosaurus's avatar

there was a find in denmark, of a therapod.…
anonymous's avatar
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