Compare dinosaurs

Pick two dinosaurs to see them side by side. Ranges are shown as published; missing values say Unknown.

First dinosaur

Second dinosaur

Drawn to one scale, overlapping on a shared ground line, with a 1.8 m human on the right. Tyrannosaurus rex: 12.3 m long · 3.9 m hip height. Spinosaurus aegyptiacus: 14 m long · 2.6 m hip height. Tyrannosaurus rex is 0.9× the length of Spinosaurus aegyptiacus.Silhouettes: Tyrannosaurus rex · Emily Willoughby, CC BY-SA 3.0, via PhyloPic · CC BY-SA 3.0; Spinosaurus aegyptiacus · Ivan Iofrida, CC BY 4.0, via PhyloPic · CC BY 4.0; Human · Cagri CEVRIM · CC0 1.0

Connor Ashbridge, CC BY 4.0, via Wikimedia Commons · CC BY 4.0

Tyrannosaurus rex

Period: Cretaceous· Maastrichtian
Age: 68–66 Ma
Diet: Carnivore
Length: 12.3–13 m
Height: 3.6–4 m
Mass: 6–9.5 t
Found in: Hell Creek Formation, Lance Formation, Scollard Formation, Frenchman Formation, Montana, South Dakota, North Dakota, Wyoming, Alberta, Saskatchewan
Classification: Dinosauria › Saurischia › Theropoda › Coelurosauria › Tyrannosauroidea › Tyrannosauridae › Tyrannosaurinae › Tyrannosaurus › Tyrannosaurus rex
Year described: 1905

Mario Lanzas, CC BY-SA 4.0, via Wikimedia Commons (unmodified except resizing) · CC BY-SA 4.0

Spinosaurus aegyptiacus

Period: Cretaceous· Cenomanian
Age: 100.5–93.9 Ma
Diet: CarnivorePiscivore
Length: 13.5–14 m
Height: 2.2–3 m
Mass: 7.4 t
Found in: Bahariya Formation, Kem Kem Group, Egypt, Morocco
Classification: Dinosauria › Saurischia › Theropoda › Tetanurae › Megalosauroidea › Spinosauridae › Spinosaurinae › Spinosaurus › Spinosaurus aegyptiacus
Year described: 1915