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The Thyreophora ("shield bearers", often known simply as "armored dinosaurs" - Greek: θυρεος, a large oblong shield, like a door and φορεω, I carry) were a subgroup of the ornithischian dinosaurs. They were armored herbivorous dinosaurs, living from the early Jurassic until the end of the Cretaceous. The Stegosauria are comprised of the Stegosauridae and Huayangosauridae and lived mostly from the Middle to Late Jurassic, although some fossils have been found in the Early Cretaceous.

AttributesValues
rdfs:label
  • Thyreophora
rdfs:comment
  • The Thyreophora ("shield bearers", often known simply as "armored dinosaurs" - Greek: θυρεος, a large oblong shield, like a door and φορεω, I carry) were a subgroup of the ornithischian dinosaurs. They were armored herbivorous dinosaurs, living from the early Jurassic until the end of the Cretaceous. The Stegosauria are comprised of the Stegosauridae and Huayangosauridae and lived mostly from the Middle to Late Jurassic, although some fossils have been found in the Early Cretaceous.
  • The Thyreophora ("shield bearers", often known simply as "armored dinosaurs" - Greek: θυρεος, a large oblong shield, like a door and φορεω, I carry) are an extinct subgroup of ornithischian dinosaurs. They were armored herbivorous dinosaurs, living from the Early Jurassic until the end of the Cretaceous. Thyreophorans are characterized by the presence of body armor lined up in longitudinal rows along the body. Primitive forms had simple, low, keeled scutes or osteoderms whereas more derived forms developed more elaborate structures including spikes and plates.
sameAs
dcterms:subject
dbkwik:fossil/prop...iPageUsesTemplate
dbkwik:paleontolog...iPageUsesTemplate
subdivision ranks
  • Clades
subordo authority
  • Nopcsa, 1915
Name
  • Thyreophorans
Caption
  • Mymoorapelta
subordo
  • Thyreophora
ordo
fossil range
imagewidth
  • 250(xsd:integer)
Image caption
  • Mymoorapelta.
superordo
subdivision
  • * Tatisaurus * Scutellosaurus * Emausaurus * Eurypoda ** Ankylosauria ** Stegosauria
Class
Color
  • pink
Suborder
  • Thyreophora (Nopcsa, 1915)
fo9ssil range
infraorders
  • * Ankylosauria * Stegosauria
Order
Image width
  • 240(xsd:integer)
classis
Superorder
  • Dinosauria
Phylum
regnum
  • Animalia
abstract
  • The Thyreophora ("shield bearers", often known simply as "armored dinosaurs" - Greek: θυρεος, a large oblong shield, like a door and φορεω, I carry) were a subgroup of the ornithischian dinosaurs. They were armored herbivorous dinosaurs, living from the early Jurassic until the end of the Cretaceous. The Thyreophora include well-known suborders such as the Ankylosauria and Stegosauria as well as lesser known groups. Among the Ankylosauria, the two main groups are the Ankylosaurids and Nodosaurids. The clade has been defined as the group consisting of all species more closely related to Ankylosaurus than to Triceratops. The Thyreophora are the sistergroup of the Cerapoda within the Genasauria. Ankylosaurids are noted by the presence of a large tail club composed of distended vertebrae that have fused into a single mass. They were heavy-set and heavily armored from head to tail in bony armor, even down to minor features such as the eyelids. Spikes and nodules, often of horn, were set into the armor. The head was flat, stocky, with little or no "neck", roughly shovel-shaped and characterized by two spikes on either side of the head approximately where the ears and cheeks were. Euoplocephalus tutus is perhaps the most well-known Ankylosaurid. Nodosaurids, the other family in the Ankylosauria, may actually include the ancestors of the ankylosaurids. They lived during the middle Jurassic (approx 170 mya) on up through the late Cretaceous (65 mya) and, while equally armored as the ankylosaurids, do not have a tail club. Instead, the bony bumps and spikes that covered the rest of their body continued out to the tail and/or were augmented with sharp spines. Two examples of Nodosaurs would be the specimens Sauropelta and Edmontonia rugosidens, the latter most notable for its formidable forward-pointing shoulder spikes several feet in length. The Stegosauria are comprised of the Stegosauridae and Huayangosauridae and lived mostly from the Middle to Late Jurassic, although some fossils have been found in the Early Cretaceous.
  • The Thyreophora ("shield bearers", often known simply as "armored dinosaurs" - Greek: θυρεος, a large oblong shield, like a door and φορεω, I carry) are an extinct subgroup of ornithischian dinosaurs. They were armored herbivorous dinosaurs, living from the Early Jurassic until the end of the Cretaceous. Thyreophorans are characterized by the presence of body armor lined up in longitudinal rows along the body. Primitive forms had simple, low, keeled scutes or osteoderms whereas more derived forms developed more elaborate structures including spikes and plates. Thyreophorans include well-known suborders such as the Ankylosauria and Stegosauria as well as lesser-known groups. Among the Ankylosauria, the two main groups are the Ankylosaurids and Nodosaurids. In both groups, the forelimbs were much shorter than the hindlimbs, and this was particularly exaggerated in stegosaurs. The clade has been defined as the group consisting of all species more closely related to Ankylosaurus than to Triceratops. Thyreophora is the sister group of the Cerapoda within the Genasauria. Ankylosaurids are noted by the presence of a large tail club composed of distended vertebrae that have fused into a single mass. They were heavy-set and heavily armored from head to tail in bony armor, even down to minor features such as the eyelids. Spikes and nodules, often of horn, were set into the armor. The head was flat, stocky, with little or no "neck", roughly shovel-shaped and characterized by two spikes on either side of the head approximately where the ears and cheeks were. Euoplocephalus tutus is perhaps the best-known ankylosaurid. Nodosaurids, the other family in the Ankylosauria, may actually include the ancestors of the ankylosaurids. They lived during the middle Jurassic (approx 170 mya) on up through the Late Cretaceous (65 mya) and, while armored as the ankylosaurids, did not have a tail club. Instead, the bony bumps and spikes that covered the rest of their body continued out to the tail and/or were augmented with sharp spines. Two examples of nodosaurs are Sauropelta and Edmontonia, the latter most notable for its formidable forward-pointing shoulder spikes. The Stegosauria suborder comprises the Stegosauridae and Huayangosauridae. These dinosaurs lived mostly from the Middle to Late Jurassic, although some fossils have been found in the Early Cretaceous. Stegosaurs had very small heads; feeble jaws with simple, leaf-like teeth and very small brains for their body size. Stegosaurs possessed rows of plates and/or spikes running down the dorsal midline and elongated dorsal vertebra. It has been suggested that stegosaur plates functioned in control of body temperature (thermoregulation) and/or were used as a display to identify members of a species, as well as to attract mates and intimidate rivals.
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