Assertion: night monkey | /r/CapableOf | lack a tapetum lucidum
Facets:
value: at any rate
type: OTHER
value: sometimes
type: TEMPORAL
Source sentences:
text: They are sometimes said to lack a tapetum lucidum, the reflective layer behind the retina possessed by many nocturnal animals.
text: At any rate, night monkeys lack the tapetum lucidum composed of riboflavin crystals possessed by lemurs and other strepsirrhines, which is an indication that their nocturnalitiy is a secondary adaption evolved from ancestral diurnal primates.