Rule 35a-7. Evidence

(a) In the adjudicatory phase, the judicial authority is limited to evidence of events preceding the filing of the petition or the latest amendment, except where the judicial authority must consider subsequent events as part of its determination as to the existence of a ground for termination of parental rights.

(b) In the discretion of the judicial authority, evidence on adjudication and disposition may be heard in a nonbifurcated hearing, provided disposition may not be considered until the adjudicatory phase has concluded.