dinochecker
Welcome to our SCUTELLOSAURUS entry...
Archived dinosaurs: 842
fb twit g+ feed
Dinosaurs from A to Z
Click a letter to view...
A B C D E F G
H I J K L M N
O P Q R S T U
V W X Y Z ?

SCUTELLOSAURUS

a plant-eating thyreophoran dinosaur from the Early Jurassic of North America.
Pronunciation: skoo-TEL-o-SOR-us
Meaning: Small-shield lizard
Author/s: Colbert (1981)
Synonyms: None known
First Discovery: Arizona, USA
Chart Position: 236

Scutellosaurus lawleri

Not to be confused with Scutosaurus (shield lizard), a genus of armor-covered pareiasaur that lived around 250 million years ago in Russia, Scutellosaurus (small-shield lizard) is a small, primitive thyreophoran dinosaur hailing from the early Jurassic Kayenta Formation of Arizona, and on the quality-of-fossils-scale is the best we have... at least among its kind.

Scutellosaurus is one of the most primitive known members of thyreophora—"the shield bearers"—and is unusual in being a biped in a group that is made up almost entirely of quadrupeds. That said, the length of its "arms" and the size of its "hands" suggest it was more than comfortable on all fours, and this was probably the preferred stance during browsing to ease the load of head to tail armour scutes, studs and knobbly bits that pushed its weight up to a whopping 14kg. Hey, don't laugh! It was less than four feet long, and over half of that length was counter-balancing tail!
(Lawler's small-shielded lizard)Etymology
Scutellosaurus is derived from the Latin "scutellum" (small shield) and the Greek "sauros" (lizard) alluding to the small armour nodes along its tail and back.
The species epithet, lawleri, honors Douglas Lawler (see discovery).
Discovery
The fossils of Scutellosaurus were discovered in the Silty Facies Member (MNA 219, Ward Terrace) of the Kayenta Formation, Coconino County, Arizona, USA, by Douglas Lawler in 1971. The holotype (MNA P1.175) is a partial skeleton.
Estimations
Timeline:
Era: Mesozoic
Epoch: Early Jurassic
Stage: Hettangian-Simemurian
Age range: 199-189 mya
Stats:
Est. max. length: 1.2 meters
Est. max. hip height: 0.4 meters
Est. max. weight: 14 Kg
Diet: Herbivore
Family Tree:
Dinosauria
Ornithischia
Thyreophora
Scutellosaurus
lawleri
References
• E. H. Colbert (1981) "A primitive ornithischian dinosaur from the Kayenta Formation of Arizona".
• D.B. Norman, L.M. Witmer and D.B. Weishampel (2004) "Basal Thyreophora" in Weishampel, Dodson and Osmólska (eds.) "The Dinosauria: Second Edition".
• Douglas Palmer (1999) "The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals". London: Marshall Editions.
Email    Facebook    Twitter    Google+    Stumbleupon    Reddit    Pinterest    Delicious
Time stands still for no man, and research is ongoing. If you spot an error, or want to expand, edit or add a dinosaur, please use this form. Go here to contribute to our FAQ.
All dinos are GM free, and no herbivores were eaten during site construction!
To cite this page:
Atkinson, L. "SCUTELLOSAURUS :: from DinoChecker's dinosaur archive".
›. Web access: 24th Nov 2017.
  top