Rowan & Martin's Laugh-In people who only stayed on for that season: Teresa Graves, Jeremy Lloyd, Pamela Rodgers, and Byron Gilliam. Lily Tomlin joined in the middle of the season. Jo Anne Worley, Goldie Hawn, and Judy Carne left after the season. The 1970–71 season brought new additions to the cast include tall, lanky, sad-eyed Dennis Allen, who alternately played quietly zany characters and straight man for anybody's jokes; comic actress Ann Elder, who also contributed to scripts, tap dancer Barbara Sharma, and Johnny Brown. Arte Johnson, who created many memorable characters, insisted on star billing, apart from the rest of the cast. The
Paul S. Martin breeding populations of surviving animals from other continents (llamas, camels, lions and cheetahs) and introducing populations of animals analogous to extinct species, i.e., elephants for mammoths. According to Vance Haynes, "unlike so many people who get infatuated with their own theories, he [Martin] spent his professional career inviting criticism. He put together two critical conferences about Pleistocene extinctions, and the volumes that came out of those were pace-setting." Paul S. Martin Paul S. Martin (born in Allentown, Pennsylvania, 1928 - died in Tucson, Arizona September 13, 2010) was an American geoscientist at the University of Arizona who developed the theory