Cretaceous armored dinosaur, 1907, Modern Latin, from Greek ankylos "bent, curved" (see angle (n.)) + -saurus. Said to be a reference to the curved ribs.
Entries linking to ankylosaurus
angle n.
"space or difference in direction between intersecting lines," late 14c., from Old French angle "an angle, a corner" (12c.) and directly from Latin angulus "an angle, a corner," a diminutive form from PIE root *ang-/*ank- "to bend" (source also of Greek ankylos "bent, crooked," Latin ang(u)ere "to compress in a bend, fold, strangle;" Old Church Slavonic aglu "corner;" Lithuanian anka "loop;" Sanskrit ankah "hook, bent," angam "limb;" Old English ancleo "ankle;" Old High German ango "hook").
The figurative sense "point or direction from which one approaches something" is from 1872. Angle-bracket is attested by 1781 in carpentry; 1956 in typography.
-saurus
element used in forming dinosaur names, from Latinized form of Greek sauros "lizard," a word of unknown origin; possibly related to saulos "twisting, wavering."