Restoring RDS Snapshot with CloudFormation

I am trying to recreate an RDS Aurora database from a snapshot using CloudFormation and I am running into a problem. During the stack creation, I am getting this error 'Only DB Snapshot Identifiers can be used with the filter DB_SNAPSHOT_ID'

Here is a snippet of my CF template:

Parameters:
  DBSnapshot: 
     Type : "String"
     Default: "arn:aws:rds:us-west-2:893352710245:cluster-snapshot:snapshot"

Resources:
  RDSDatabase:
     Type: "AWS::RDS::DBInstance"
     Properties:
       DBInstanceClass: 'db.t2.micro'
       DBSnapshotIdentifier: !Ref DBSnapshot