Size comparison scale

[dinosauria101]

theropod

Rescaled yet again, holotype of Tyrannosaurus rex (11.9 meters TL) vs paratype of Mamenchisaurus sinocanadorum (35 meters TL). Skeletals by Hartman and Greg Paul, scalebar is 1 meter

[dinosauria101]

American mastodon vs Tyrannosaurus rex, max vs max (595BS71 vs Sue).
Scalebar is 1 meter, skeletal and top view for Sue are by Franoys while mastodon skeletal and top view by Larramendi

[dinosauria101]

Sue the Tyrannosaurus rex (12.3 meters TL stretched out) vs Sauroposeidon holotype (32 meters TL). Scalebars are 1 meter, skeletals are by Hartman and Paleo King.

[dinosauria101]

Holotype of Dreadnoughtus (~26 meters TL, ~46 tonnes based on Broly's earlier mass estimates, still a juvenile) vs OMNH 1670 Apatosaurus (28.3 meters TL, 52 tonnes, not fully grown). Top scalebar is 1 meter, skeletals are from the Dreadnoughtus describers and Hartman respectively.

[roninwolf1981]

Here's one I feel might be a bit too demanding, but the principle (or iconic) dinosaurs in 1 image, all to scale. The ones I mean by "principle" are these:
-Tyrannosaurus rex
-Allosaurus fragilis
-Stegosaurus ungulatus
-Triceratops horridus
-Apatosaurus ajax
-Edmontosaurus annectens
-Ankylosaurus magniventris

[dinosauria101]

roninwolf1981 , I can deffo make you that size chart. Just one thing however: I can only fit so much stuff in before space/zooming and resolution become an issue. So I don't know whether or not I can include everything, but we'll just have to hope for the best.

[roninwolf1981]

I'd be fine with overlapping if space is going to be a problem.

[dinosauria101]

Thing is, I completely lack the ability for overlap of images in my size comparisons.

Oh well, shouldn't be THAT much of a problem. I think I ought to be able to fit in a good bit of stuff still.

[dinosauria101]

roninwolf1981, here's everything I could fit in without any issues: Average Edmontosaurus annectes (12.5 meters TL), holotype of Tyrannosaurus rex (11.9 meters TL), OMNH 1670 Apatosaurus (28.3 meters TL), average Ankylosaurus (10 meters TL), and max Triceratops (9.2 meters TL). Tyrannosaurus scalebar is 1 meter, credit to David Evans for the Edmontosaurus, GetAwayTrike for the Ankylosaurus, and Scott Hartman for all the rest

[dinosauria101]

Max American mastodon (325 cm SH, 11 tonnes) vs Dreadnoughtus holotype (26 meters TL, 46 tonnes, still a juvenile). Scalebar is 1 meter, credit to Larramendi and the Dreadnoughtus discoverers for the skeletals

[dinosauria101]

Montreuil Palaeoloxodon antiquus (420 cm SH, 15 tonnes) vs OMNH 1670 Apatosaurus (28.3 meters TL, 52 tonnes, less than half grown). Skeletal and top view for the elephant are by Larramendi while Apatosaurus skeletal is by Hartman and top view by Greg Paul.

[dinosauria101]

BYU 12183 Triceratops (scaled to 2.5 meter skull length, 8.6 tonnes using this skeletal) and UCMP 128561 Triceratops (scaled to 2.7 meters skull length, 11 tonnes using this skeletal) vs Dreadnoughtus holotype (26 meters TL, 46 tonnes, still a juvenile). Scalebar is 1 meter, Triceratops skeletal is by Hartman while UCMP 128561's head is by Eofauna, Dreadnoughtus is by the paper describing it.

[dinosauria101]

Holotype of Tyrannosaurus rex (CM 9380, 11.9 meters, 7.5 tonnes) vs Ruyangosaurus (31 meters TL, 60 tonnes). Scalebars are 1 meter, skeletals are by Hartman and Paleo King respectively

[dinosauria101]

This image illustrates the disparity in robusticity between Diplodocus and Apatosaurus very well.
Largest Diplodocus ('Seismosaurus' specimen), 32-34 meters TL, 20 tonnes, vs OMNH 1670 Apatosaurus, 28.3 meters TL, 52 tonnes. Despite being at a ~13-20% length disadvantage, the Apatosaurus is 2.6 times bigger! Top scalebar is 1 meter, both skeletals by Hartman.

[dinosauria101]

Paraceratherium vs Apatosaurus, max vs max
Paraceratherium is AMNH 26168/75 (4.8 meters SH, 17 tonnes) while Apatosaurus is estimated adult OMNH 1670 (37 meters TL, 100 tonnes). Skeletals by Larramendi and Hartman.