Simplify the following text for a Grade 11 native English-speaking person.
Original: Newts only appear in one subfamily of salamanders , the Pleurodelinae ( of the family Salamandridae ) , however , Salamandrina and Euproctus , which are sometimes listed as Pleurodelinae , are not newts .
Simplified: Newts only appear in one subfamily of salamanders , the Pleurodelinae ( of the family Salamandridae ) . However , some of the genera sometimes listed as Pleurodelinae are not newts ( Salamandrina and Euproctus ) .