miRNA families that are unique for Petromyzontiformes:

miR-210	miR-1175*	miR-2021	miR-3584	miR-4319
miR-3223

miRNEST miRNAs belonging to family miR-2021:

mature miRNA	miRNEST id
AGGTGGTCGGTGTTTCTTGGA	MNEST008700