Thyreophora is a suborder of ornithischian dinosaurs. They were the armoured dinosaurs: the name means 'shield-bearer'. They are divided into these groups:

Artist's rendering of Acanthopholis

Acanthopholis was 15 feet long, walked on four legs, lived in the Lower Cretaceous). Its armour consists of many oval plates that go from its neck to its tail. That lived 100 million yeas ago. The name 'spiny scales' refers to its armour.

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