Questions people actually ask

Triceratops means “three-horned face”. Natural History Museum: Triceratops (Dino Directory)

You say it tri-SERRA-tops. Natural History Museum: Triceratops (Dino Directory)

It lived in the Late Cretaceous, 68 to 66 million years ago. Natural History Museum: Triceratops (Dino Directory)

Triceratops fossils come from rock layers such as the Hell Creek Formation in Montana and the Dakotas and the Lance Formation in Wyoming. Longrich & Field (2012), Torosaurus is not Triceratops, PLOS ONE

The Natural History Museum gives its length as 9 metres. Natural History Museum: Triceratops (Dino Directory) · checked 27 Oct 2026 The Natural History Museum gives its weight as 10,000 kg (10 tonnes). Natural History Museum: Triceratops (Dino Directory) · checked 27 Oct 2026 The Smithsonian describes it as roughly the same size as an elephant. Smithsonian Magazine: Meet the dinos of “Deep Time”, 2019 · checked 27 Oct 2026

Triceratops was a herbivore: a plant eater. Natural History Museum: Triceratops (Dino Directory) The Natural History Museum lists its food as tough palm fronds. Natural History Museum: Triceratops (Dino Directory)

The Smithsonian says its beak-like mouth held up to 800 teeth. Smithsonian Magazine: Meet the dinos of “Deep Time”, 2019

The frill might have protected its neck. It could also have helped attract mates, or let Triceratops recognise each other. Natural History Museum: Triceratops (Dino Directory) A 2009 study found Triceratops had more injuries on the squamosal bone of its frill than Centrosaurus did, which fits Triceratops locking horns and the frill acting as a shield. Farke, Wolff & Tanke (2009), Evidence of combat in Triceratops, PLOS ONE

Many horned dinosaurs lived in herds, but Triceratops remains are usually found alone, which suggests it may have spent much of its life alone. Natural History Museum: Triceratops (Dino Directory)

Some specimens show Tyrannosaurus bite marks punched through the frill, so it wasn’t always enough protection. Natural History Museum: Triceratops (Dino Directory) Smithsonian curator Matthew Carrano says some Triceratops skulls bear the telltale hole punches of T. rex teeth. Smithsonian Voices (NMNH): Q&A on the T. rex’s new pose, 2018

In 2010 John Scannella and Jack Horner proposed that Torosaurus was really the fully grown form of Triceratops, its frill thinning and opening up holes late in life. Smithsonian Magazine: The Torosaurus identity crisis continues, 2012 In 2012 Longrich and Field found both young and mature skulls of both Torosaurus and Triceratops, and concluded Torosaurus is a separate dinosaur. Longrich & Field (2012), Torosaurus is not Triceratops, PLOS ONE

If they were the same animal, Triceratops would keep its name, because it was named first (1889) and Torosaurus later (1891). Smithsonian Magazine: Relax, Triceratops really did exist, 2010

Today scientists recognise two species: Triceratops horridus and Triceratops prorsus. Natural History Museum: Triceratops (Dino Directory) · checked 27 Oct 2026

Triceratops wasn’t related to rhinoceroses. They look a bit alike because of convergent evolution: unrelated animals evolving similar shapes. Natural History Museum: Triceratops (Dino Directory)