Laurasia as a Mesozoic phenomenon, today it is believed that the same continents that formed the later Laurasia also existed as a coherent supercontinent after the breakup of Rodinia around 750 million years ago. To avoid confusion with the Mesozoic continent, this is referred to as Proto-Laurasia. It is believed that Laurasia did not break up again before it recombined with the southern continents to form the late Precambrian supercontinent of Pannotia, which remained until the early Cambrian. Laurasia was assembled, then broken up, due to the actions of plate tectonics, continental drift, and seafloor spreading. During the Cambrian, Laurasia was
Gondwana Choirs Australian composers. Gondwana Choirs Gondwana Choirs is an Australian national children's choir organisation. It was founded in 1989 as Sydney Children’s Choir by Lyn Williams OAM, who is its artistic director, and is located in Millers Point, New South Wales. Gondwana Choirs has three divisions, Sydney Children's Choir, Gondwana National Choirs and Gondwana Indigenous Children's Choir, and includes several different choirs: Gondwana Choirs auditions nationally and meets in January for a two-week camp of intensive rehearsal. Choirs then typically undertake one or more tours during the year. Gondwana Choirs also runs a Composer School and a Conducting Internship, and commissions