In what region did the Sika deer that are now found on the Tibradden Mountain originate?
Sika deer The sika deer ("Cervus nippon") also known as the spotted deer or the Japanese deer, is a species of deer native to much of East Asia, and introduced to various other parts of the world. Previously found from northern Vietnam in the south to the Russian Far East in the north, it is now uncommon in these areas, excluding Japan, where the species is overabundant.
Saint Bathans Fauna The Saint Bathans Fauna, or St Bathans Fauna, is found in the lower Bannockburn Formation of the Manuherikia Group of Central Otago, in the South Island of New Zealand. It comprises a suite of fossilised prehistoric animals from the late Early Miocene (Altonian) period, with an age range of 19–16 million years ago. The layer in which the fossils are found derives from littoral zone sediments deposited in a shallow, freshwater lake, with an area of 5600 km. The lake was bordered by an extensive floodplain containing herbaceous and grassy wetland habitats with peat-forming swamp–woodland. At that time the climate was warm and the surrounding vegetation was characterised by casuarinas, eucalypts and palms as well as podocarps, araucarias and southern beeches. The fossiliferous layer has been exposed at places along the Manuherikia River and at other sites in the vicinity of the historic gold mining town of Saint Bathans. The fauna consists of a variety of vertebrates, including fish, a crocodilian, a sphenodont (the tuatara family), geckos, skinks, and several kinds of birds, especially waterbirds. A basal form of kiwi, "Proapteryx", is known from there.