Dromaeosaurid Size Comparisons

[Troodon 6,625]

David Evans who described Acheroraptor shared this photo and information on a few notable Dromaeosaurid's.  Thought it would be of interest to the Dino guys and others.  I also show a hand next to an adult Velociraptor skull which gives a real life size comparison, since a lot of depictions and replicas sold are well oversized.

 

Acherorapter is from the Maastrichtian of Hell Creek/Lance Formation

Saurornitholestes shown from Campanian of Canada/Montana 

Velociraptor from Campanian of Asia

 

David: How big was the Hell Creek dromaeosaurid Acheroraptor temertyorum (top)? It’s about 25% bigger than Saurornitholestes (middle) and 66% bigger than Velociraptor (bottom). For reference it’s about 15% smaller than Deinonychus

 

 

 

 

[TyBoy 1]

That's very interesting.   Did not appreciate the size of velociraptor, thanks for posting

[Fossildude19 5,106]

Interesting  - here is a comparative size chart I found on Google Images:

 

 

Original artwork by FredtheDinosaurman

[Bobby Rico 798]

9 minutes ago, Fossildude19 said:

Interesting  - here is a comparative size chart I found on Google Images:

 

 

Original artwork by FredtheDinosaurman

Why is the man in the picture from Victorian England , was people not general smaller in them days? 

 

very interesting thank you  @Troodon

 

 

[ynot 3,206]

1 hour ago, Bobby Rico said:

Why is the man in the picture from Victorian England ,

It's Dc. Dolittle. He was the only one that could get them critters to line up for the picture!

[Wilhelm 2]

2 hours ago, Fossildude19 said:

Interesting  - here is a comparative size chart I found on Google Images:

 

Original artwork by FredtheDinosaurman

Huh, thought Deinonychus was bigger than that. Guess the people who keep saying Deinonychus is the true JP Velociraptor are thinking of Austroraptor or Utahraptor.

[Troodon 6,625]

Dakotaraptor from the Hell Creek Formation a biggie

 

[Wilhelm 2]

2 minutes ago, Troodon said:

Dakotaraptor from the Hell Creek Formation a biggie

 

Haven't seen a lot of Dakotaraptor teeth around. Even though the species was described fairly recently you would think isolated teeth would have been found in abundance.

[Fossildude19 5,106]

15 minutes ago, Wilhelm said:

Huh, thought Deinonychus was bigger than that. Guess the people who keep saying Deinonychus is the true JP Velociraptor are thinking of Austroraptor or Utahraptor.

Yes, I remember reading somewhere that the "Velociraptor" in JP was embellished in size, since  Deinonychus was the biggest dromaeosaurid  described, up until then (1993).

Spielberg wanted the Velociraptors to be bigger, and therefore, more scary. 

Utahraptor was discovered in 1991, but I don't think it was formally described at the time. 

Dakotaraptor was found in 2005. 

[Troodon 6,625]

On 4/16/2018 at 11:43 AM, Wilhelm said:

Haven't seen a lot of Dakotaraptor teeth around. Even though the species was described fairly recently you would think isolated teeth would have been found in abundance.

Have not seen very many Dakotaraptor teeth so they appear to be scarce.  Having said that the teeth are difficult to identify and look very similiar to juvie Nanotyrannus teeth.   Some that I've seen on the market were misidentified.  I have yet to find one.  Most sellers are clueless in how to properly Identify them, so caution.

Edited Wednesday at 02:52 PM by Troodon

[Troodon 6,625]

Learn about Utahraptor

 

 

[Troodon 6,625]

The original (type specimen) skull of Velociraptor

 

Set of Velociraptor  skulls

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Images courtesy of Thomas Holt

[Troodon 6,625]

Today is Velociraptor Awareness Day! 

Dave Evans posted this

Velociraptor mongoliensis is a dromaeosaurid dinosaur. Its known from the late Campanian of Mongolia & lived ~73 million years ago. There is a second referred species, V. osmolskae, but it may be closer to Tsaagan & may need a new genus name. 

Check out those claws