The half-hour comedy, slated to debut this fall, will air Tuesdays at 8 PM on ABC. Daniel Rappaport, Guymon Casady, Bill Martin and Mike Schiff serve as executive producers for the ABC Studios show with Will Speck and Josh Gordon, who also direct. Joe Lawson is writer and co-executive producer.

Based on the popular Geico insurance commercials featuring cavemen and their plight to be recognized as equals in modern society, the series continues with the trio of Neanderthals.

"Joel, his cynical best friend, Nick, and easy-going little brother, Jamie, are contemporary cavemen who live in the suburban south and simply want to be treated like ordinary thirty-something guys," reads show materials. "Despite their attempts at assimilation, Nick doesn't believe mainstream society will ever completely accept them, Jamie seems to take it all in stride and Joel straddles the middle, torn between his friends, his traditional values and his loving fiancée."

White appeared in a guest role in the pilot as the mother of the affianced woman (Kaitlin Doubleday). Her role has now become a regular part of the series.

Prior to her Tony win for The Little Dog Laughed, White — seen previously on the small screen in "Desperate Housewives," "Grace Under Fire" and "Six Feet Under" — appeared on stage in Bad Dates, Fiction, The Heidi Chronicles, Dinner With Friends, Barbra's Wedding, Spike Heels and The Family of Mann. Also seen in the recent film "The Astronaut Farmer," White will next join George Clooney in "Michael Clayton" and Laura Linney in "The Nanny Diaries."

For more information, visit abc.com.