Assertion: sand lizard's egg | /r/HasAspect | leathery shells
Facets:
value: in most lizards
type: OTHER
Source sentences:
text: In most lizards, the eggs have leathery shells to allow for the exchange of water, although more arid-living species have calcified shells to retain water.
text: In most lizards, the eggs have leathery shells to allow for the exchange of water, although more arid-living species have calcified shells to retain water.