Assertion: corn snake's scale | /r/HasAspect | sensory structures
Facets:
value: on the posterior margins
type: LOCATION
Source sentences:
text: The scales in some species have sensory structures on the posterior margins called apical pits, and all scales have various micro-ornamentations, consisting of hairlike projections, holes, spinules (small spines), and other specializations visible only through an electron microscope.