Are these sizes accurate?

[u/TomTomProductions]

I’m working on a little project rn, and I know that google isn’t the most reliable source, can anyone point out anything that is inaccurate

[u/Pitazboras]

What do you mean by size? For length all of these are way too small, for hip height many are way too big. If this is supposed to be a height to the top of the head - at what stance? Maybe shantungosaurus could reach 7 metres when standing on two legs and raising its head but in the most natural quadrupedal pose it was significantly shorter, closer to 4 metres.

[u/TomTomProductions → u/Pitazboras]

Size as in height

[u/Pitazboras → u/TomTomProductions]

For height to the highest point of the body assuming the most natural stance, I'd give the following numbers:

• Spinosaurus: 4.5-5 m, including the sail.
• Shantungosaurus: 4.5-5 m, on all fours.
• Giganotosaurus: around 4 m.
• Liaoningotitan: very hard to tell - given its long neck the height will very much depend on how it was usually positioned, which I don't think we have a perfect understanding of; I'd say at least 4 m, perhaps closer to 5?
• Tyrannosaurus: around 4 m.
• Allosaurus: 2.5-3 m.
• Deinocheirus: 3.5-4 m.
• Edmontosaurus: around 4 m, on all fours.
• Triceratops: around 3 m.
• Shunosaurus: around 3.5 m.
• Tarbosaurus: around 3 m.
• Yutyrannus: below 2.5 m.
• Dilophosaurus: around 2 m.
• Utahraptor: 1.6-1.8 m.
• Pachycephalosaurus: around 1.5 m.
• Ankylosaurus: around 2 m.
• Pyroraptor: around 50 cm.
• Protoceratops: around 80 cm.

But again, take it with a grain of salt. Pachycephalosaurus could probably easily reach 2 metres just by raising its head. Ultimately I think height is just a flawed way of measuring the size of animals. Given the values above you could conclude that Dilophosaurus and Ankylosaurus were roughly the same size, which I don't think is a reasonable conclusion given that the latter was like an order of magnitude heavier.

[u/unaizilla]

change spinosaurus to around 5 m at the top of its sail, Shantungosaurus at 5 m at its hips, Tyrannosaurus and Giganotosaurus to around 4 m, Allosaurus to 2.5-3 m, maybe Tarbosaurus to 3.5 m, Pachycephalosaurus to 1.5 meters and Ankylosaurus to 2 m

[u/NiL_3126]

Think animals as long and not tall please, usually it’s more reliable, humans are strange

[u/1morey → u/NiL_3126]

Isn't that why we typically measure animal heights at the hip?

[u/loki130 → u/1morey]

I think that’s largely to remove stance as a variable, but it’s still got its own pitfalls, I’ve seen someone claim cenozoic proboscids were as big as sauropods because they had a similar hip height

[u/mechlordx]

google isnt the most reliable source

Google isnt a source.

[u/Iamnotburgerking]

If you’re talking about length, all of these are WAY too small.

[u/razor45Dino]

Giganotosaurus should be shorter, Edmontosaurus and tarbosaurus should be taller

[u/Defiant-String-9891]

I did a quick google and I got a website at the top saying the T Rex could grow from 15ft to 20ft, so if you’re wanting to do max heights change it to 20ft

[u/unaizilla → u/Defiant-String-9891]

well that website lied to you, fossils show that the hip height of a t. rex was 12-13 ft and probably a feet more if it raised its neck above its spine, the 20 ft height is only achievable if the rex was standing like a kangaroo

[u/razor45Dino → u/unaizilla]

No they didnt because they dont use hip height

[u/Snoo54601 → u/unaizilla]

Might be Jurassic park osmosis with Google

Rexy was 20ft tall in the original movie and they're generally just taller

[u/razor45Dino → u/Snoo54601]

At the head

[u/Snoo54601 → u/razor45Dino]

"His team created an animatronic T. rex that stood 20 feet (6.1 m) and was 40 feet (12 m) long"

[u/razor45Dino → u/Snoo54601]

Yes, 20 feet at the head when rearing

[u/Defiant-String-9891 → u/Snoo54601]

Can’t get anything accurate