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randomdinos — Stem-Bird Files: Iguanodon

#iguanodontia #hadrosauriformes #iguanodonbernissartensis #dryomorpha #ankylopollexia
Published: 2016-03-28 01:33:49 +0000 UTC; Views: 5718; Favourites: 101; Downloads: 21
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Description Iguanodontia>Dryomorpha>Ankylopollexia>Hadrosauriformes>Iguanodon>I.bernissartensis
Boulenger, 1881
Time: Late Barremian (126-125 million years ago)
Length: Up to 9.5 meters (31.1ft) when fully grown.
Height: Up to 2.7 meters (8.8ft) at the hip when fully grown.
Weight: Up to 4.8 tonnes when fully grown.
Habitat: The region of Bernissart in Belgium, Europe; possibly other locations within the continent.
Ecology: Large terrestrial herbivore. Like other hadrosauriformes, Iguanodon had a keratinous beak structure for cropping twigs and leaves, and a primitive form of chewing to break it down within the mouth, and the flexible little finger could have helped gather foliage or grasp tree trunks or other objects.
Diet: Tree-level foliage, perhaps up to 4 meters off the ground. Probably ate horsetails, cycads, and conifers, as well as young angiosperm trees.
Locomotion: While initially interpreted as an obligate quadruped, then a triped and then a biped, it was most likely a facultative biped, though adults likely spent more time on all fours. Juvenile I.bernissartensis show proportionally shorter arms than adults, implying a mostly bipedal lifestyle as they were younger. The maximum speed of Iguanodon is estimated, on a bipedal gait, to be around 25 kph (15 miles per hour).
Social behavior: Although sometimes interpreted as the result of a single catastrophe, the Bernissart finds of 38 Iguanodon skeletons are now interpreted as recording multiple events. According to this interpretation, at least three occasions of mortality are recorded, and though numerous individuals would have died in a geologically short time span, this does not necessarily mean they were all in large herds/groupd during the occasion.
Potential predators: As juveniles, contemporary tyrannosauroid Eotyrannus and spinosaurid Baryonyx. Their bulk probably protected a grown adult from either of these theropods, but most adults would still be susceptible to attacks from Neovenator.
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Update 07/14/17: 
-Lineart completely remade.
-Replaced human scale figure.
-More accurate size estimate, now along the centra as is the norm, instead of in a straight line.
-Updated common name (let's be honest, ''Iguanodon'' is much more memorable than ''Bernissartian Iguana Tooth'', that name was terrible)
-Minor text corrections.

Skeletal reconstruction by
Related content
Comments: 32

AlternatePrehistory [2017-08-18 13:16:06 +0000 UTC]

Make it 15 meetr

👍: 0 ⏩: 1

randomdinos In reply to AlternatePrehistory [2017-08-18 22:11:53 +0000 UTC]

o

👍: 0 ⏩: 0

105697 [2017-07-15 01:00:34 +0000 UTC]

BIG. MEATY. CLAWS.

👍: 0 ⏩: 1

Glavenychus In reply to 105697 [2017-07-21 02:26:30 +0000 UTC]

Well these claws ain't just for mating!

👍: 0 ⏩: 1

jman12351 In reply to Glavenychus [2018-01-29 19:06:32 +0000 UTC]

Is mayonnaise an instrument?

👍: 0 ⏩: 1

Atlantis536 In reply to jman12351 [2018-02-04 11:02:25 +0000 UTC]

What?

👍: 0 ⏩: 0

PCAwesomeness [2017-07-15 00:35:33 +0000 UTC]

Welp, we have the new Stegosaurus here...

Anyways, awesome!

👍: 0 ⏩: 1

randomdinos In reply to PCAwesomeness [2017-07-15 01:00:12 +0000 UTC]

New Stegosaurus?

And thanks!

👍: 0 ⏩: 1

PCAwesomeness In reply to randomdinos [2017-07-15 01:04:39 +0000 UTC]

It got a length increase, but a mass decrease.

Anyways, you're welcome!

👍: 0 ⏩: 0

TrefRex [2016-04-06 04:01:27 +0000 UTC]

There's also an unnamed velociraptorine dromaeosaur that's known from only a single tooth found in the Wessex Formation in Isle of Wight, England and judging from the size of the tooth, the raptor dinosaur would've been similar in size to Utahraptor! news.bbc.co.uk/2/hi/science/na…

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scyther500 In reply to TrefRex [2016-04-07 17:39:01 +0000 UTC]

Oooh! Is that what WWD's European Utahraptors inspired from??

👍: 0 ⏩: 1

TrefRex In reply to scyther500 [2016-04-08 20:27:34 +0000 UTC]

I think so! I mean that could explain it perhaps

👍: 0 ⏩: 0

randomdinos In reply to TrefRex [2016-04-07 00:13:15 +0000 UTC]

Dang, that's huge!

👍: 0 ⏩: 2

AlternatePrehistory In reply to randomdinos [2017-08-18 13:17:36 +0000 UTC]

Lies! All lies! It could be a proceratosaur (unlikely, seeing how we've found Dromaeosaurs from the formation, but not other tyrannosaurs)

👍: 0 ⏩: 0

TrefRex In reply to randomdinos [2016-04-10 02:47:12 +0000 UTC]

I know 

👍: 0 ⏩: 0

EliTheDinoGuy [2016-04-03 20:51:50 +0000 UTC]

I really like this one, accurate. Can you do a saurolophus plez

👍: 0 ⏩: 1

randomdinos In reply to EliTheDinoGuy [2016-04-03 21:04:13 +0000 UTC]

Thanks! And alright

👍: 0 ⏩: 1

EliTheDinoGuy In reply to randomdinos [2016-04-09 01:35:44 +0000 UTC]

Sweet!!

👍: 0 ⏩: 0

PCAwesomeness [2016-03-28 21:53:57 +0000 UTC]

How would he react if he saw stuff on Facebook?

👍: 0 ⏩: 1

randomdinos In reply to PCAwesomeness [2016-03-28 23:32:29 +0000 UTC]

Either bend his arm 45 degrees up, or turn his back against  the post and bend it 45 degrees down.

👍: 0 ⏩: 1

PCAwesomeness In reply to randomdinos [2016-03-29 00:18:28 +0000 UTC]

Heh.

👍: 0 ⏩: 0

Jdailey1991 [2016-03-28 19:00:25 +0000 UTC]

You mentioned Baryonyx.  If the claim that Spino's legs are itty-bitty hold water (no pun intended), then the other spinosaurs, like Baryonyx, should have had the same leg size.  Yet Spino was, as far as we know, the sole exception.  Why could that be?

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randomdinos In reply to Jdailey1991 [2016-03-28 19:42:16 +0000 UTC]

Spinosaurus wasn't alone in its leg proportions; Sigilmassasaurus had them the same.

This may have to do with their different lifestyles or their position in the Spinosauridae family tree. (Baryonychines vs. Spinosaurines)

👍: 0 ⏩: 1

Jdailey1991 In reply to randomdinos [2016-03-28 21:54:10 +0000 UTC]

Different how?

👍: 0 ⏩: 1

randomdinos In reply to Jdailey1991 [2016-03-28 23:18:54 +0000 UTC]

Baryonychines were more generalistic, while spinosaurines were more specialized.

👍: 0 ⏩: 1

Jdailey1991 In reply to randomdinos [2016-03-28 23:21:56 +0000 UTC]

So, by that statement, Irritator and Siamosaurus were more closely related to the Heavy Claw than Spinosaurus?

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randomdinos In reply to Jdailey1991 [2016-03-29 00:01:19 +0000 UTC]

Of all spinosaurids, Siamosaurus teeth have the highest evidence of oxygen isotopes pointing towards life in water (more so than Spinosaurus itself).

 Isotope ratios from teeth from the spinosaurids BaryonyxIrritator , Siamosaurus, and Spinosaurus  were compared with isotopic compositions from contemporaneous theropods, turtles, and crocodilians. The study found that, among theropods, spinosaurid isotope ratios were closer to those of turtles and crocodilians. Siamosaurus specimens tended to have the largest difference from the ratios of other theropods

Irritator was the black sheep of the subfamily since it was more baryonychine-like in its feeding, but it's more closely related to Spino.

👍: 0 ⏩: 1

Jdailey1991 In reply to randomdinos [2016-03-29 00:39:12 +0000 UTC]

So what does it mean for Spino?  That it spent time on land outside the nesting season?

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randomdinos In reply to Jdailey1991 [2016-03-29 01:03:20 +0000 UTC]

Probably, yeah. While the isotope analysis cannot be 100% reliable (you can imagine the margin of error when all you have to go by are teeth), Spinosaurus wasn't a huge oddball in its family when it came to living in water, and was actually less so than others. From my point of view it probably spent several hours a day lazing off on muddy beaches like turtles or crocodiles, since a fully grown adult probably didn't have much to look out for (and even then, by staying close to the water you'd be assuring that you're not too far away from your turf when threatened, and can make a hasty retreat).

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TheDubstepAddict [2016-03-28 02:16:30 +0000 UTC]

A THUMBS UP for this

Yeah that joke was bad. Verry bad.

👍: 0 ⏩: 1

randomdinos In reply to TheDubstepAddict [2016-03-28 02:24:14 +0000 UTC]

A thumbs angled 45 degrees away from the position of your hand

👍: 0 ⏩: 1

TheDubstepAddict In reply to randomdinos [2016-03-28 02:28:40 +0000 UTC]

A thumbs stabbing theropod bullies

👍: 0 ⏩: 0