Sunnyodon  Sunnyodon is a genus of tiny, extinct mammal, probably of the Lower Cretaceous. Found in what is now southern England, it was a relatively early member of the extinct order of Multituberculata. It is part of the suborder Plagiaulacida and family Paulchoffatiidae. The genus "Sunnyodon" (meaning "Sunny tooth", after Sunnydown Farm) was named by Zofia Kielan-Jaworowska and Ensom P.C. in 1992 based on a single specimen. Fossil remains of the species "Sunnyodon notleyi" Lower Cretaceous-age strata of the Lulworth Formation in Durlston Bay, Dorset, England. This is a tooth-based species. A tooth from the Danish island of Bornholm was assigned to "Sunnyodon" in 2004. It is the first fossil of a Mesozoic mammal found in Scandinavia.