Also found in: Thesaurus, Wikipedia.
Related to thyreophoran: pachycephalosaurus, Argentinosaurus


Any of various armored ornithiscian dinosaurs of the group Thyreophora from the Jurassic and Cretaceous Periods, bearing bony plates or spikes, and including the ankylosaurians and the stegosaurians.

[New Latin Thyreophora, taxon name, Greek thureos, oblong shield; see thyroid + Greek -phora, neuter pl. of -phoros, -phore.]

thyr′e·oph′o·ran adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.thyreophoran - armored dinosaurs: stegosaurs and ankylosaurs
animal order - the order of animals
order Ornithischia, Ornithischia - extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
armored dinosaur - dinosaurs having bony armour
genus Stegosaurus - quadrupedal armored herbivore of the Jurassic and Cretaceous
genus Ankylosaurus - armored herbivorous dinosaurs of the Cretaceous
References in periodicals archive ?
The Las Sereas 7 quadruped trackways are different from thyreophoran trackways.
As happened with sauropod and thyreophoran tracks (such as those of ankylosaurs), the distinction between them is not obvious when dealing with tracks that do not preserve anatomical characters, such as digit marks.
In contrast, in thyreophoran hands the distribution of impressions is even more arcuate with greater distances between the impressions, resulting in a star-shaped impression (e.