Assertion: plateau tiger salamander | /r/HasProperty | subspecies of a. tigrinum
Facets:
value: all once
type: TEMPORAL
Source sentences:
text: The California tiger salamander (Ambystoma californiense) (listed at Vulnerable), the barred tiger salamander (A. mavortium), and the plateau tiger salamander (A. velasci) were all once considered subspecies of A. tigrinum, but are now considered separate species.