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Fun facts
Ziapelta's skull was covered in bony plates called caputegulae, and it had a large, triangular plate on its snout.2
Its squamosal horns were deep and curved forward, measuring about 10.2 centimetres (4 inches) from base to tip.1
The back of Ziapelta's skull had three deep grooves, a feature not seen in other ankylosaurs.2
Ziapelta lived about 74.5 to 72.6 million years ago, during the Late Cretaceous period.1
Its fossils were found in the Kirtland Formation of New Mexico, in the Bisti/De-Na-Zin Wilderness.1
The first Ziapelta skull was discovered in 2011 by a team led by Robert Michael Sullivan.1
Ziapelta's name comes from the Zia sun symbol on the New Mexico state flag, plus the Latin word for shield.1

Most asked questions about Ziapelta
?What did Ziapelta eat?
Ziapelta was a plant-eater. Its small teeth and wide beak helped it chew tough plants.1
?How big was Ziapelta?
Nobody knows for sure because only the skull and neck armor have been found. The skull was about 30 centimetres (12 inches) long, so the whole dinosaur was probably around 5 metres (16 feet) long.12
?Did Ziapelta have a tail club?
Yes, like most ankylosaurids, Ziapelta probably had a big bony club at the end of its tail, but no tail bones have been found yet.1

Ask Rex about Ziapelta
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For dino experts
- Scientific name
- Ziapelta
- Named by
- Arbour et al. 20144
- Group
- Armoured dinos
- Family / clade
- Ankylosauridae4
- Classification
- Ornithischia > Ankylosauria > Ankylosauridae > Thyreophora4
- Age of the rocks
- 84 to 72 million years (Campanian)4
- Rock formations
- Kirtland4
- Countries
- USA4
- Fossil records
- 1 in the Paleobiology Database4
- Discovery
- Ziapelta was named in 2014 by Victoria Arbour and colleagues, based on a complete skull and neck armour found in New Mexico.14
- Still debated
- Scientists are not sure whether Ziapelta was more closely related to Scolosaurus or to Nodocephalosaurus.1
Where the facts come from
- Ziapelta (en.wikipedia.org)
- A New Ankylosaurid Dinosaur from the Upper Cretaceous (Kirtlandian) of New Mexico with Implications for Ankylosaurid Diversity in the Upper Cretaceous of Western North America (pmc.ncbi.nlm.nih.gov)
- Ziapelta sanjuanensis | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
- Ziapelta in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.
Every fact on this page has a number that points to its source. If we got something wrong, sorry, we are dino fans, not a science journal. Tell us at [email protected] and we will fix it.
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