Assertion: box turtle's shell | /r/CapableOf | offer protection
Facets:
value: at every stage of its evolution
type: TEMPORAL
Source sentences:
text: Based on body fossils, the first proto-turtles are believed to have existed in the late Triassic Period of the Mesozoic era, about 220 million years ago, and their shell, which has remained a remarkably stable body plan, is thought to have evolved from bony extensions of their backbones and broad ribs that expanded and grew together to form a complete shell that offered protection at every stage of its evolution, even when the bony component of the shell was not complete.