Nedra Talley Ross, the last surviving founding member of the early 1960s-era girl group and Rock and Roll Hall of Famers the Ronettes , has died, according to a post on the group’s Facebook page . No cause of death was announced; she was 80 years old. “It is with heavy hearts that we share the news of Nedra Talley Ross’ passing. She was a light to those who knew and loved her,” the post reads. “As a founding member of The Ronettes, along with her beloved cousins Ronnie and Estelle, Nedra’s voice, style and spirit helped define a sound that would change music. Her contribution to the group’s story and their defining influence will live forever. “Rest peacefully dear Nedra.…