Laurasiatheria Laurasiatheria Laurasiatheria is a clade of placental mammals that originated on the northern supercontinent of Laurasia 99 million years ago. The clade includes shrews, pangolins, bats, whales, carnivorans, odd-toed and even-toed ungulates, among others. Laurasiatheria was discovered on the basis of the similar gene sequences shared by the mammals belonging to it; no anatomical features have yet been found that unite the group. The Laurasiatheria clade is based on DNA sequence analyses and retrotransposon presence/absence data. The name comes from the theory that these mammals evolved on the supercontinent of Laurasia, after it split from Gondwana when Pangaea broke up.
Gondwana Choirs 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 works from