Albert Einstein's theory of relativity is actually two separate theories: his special theory of relativity , postulated in the 1905 paper, The Electrodynamics of Moving Bodies and his theory of general relativity , an expansion of the earlier theory, published as The Foundation of the General Theory of Relativity in 1916.
Timber or Grey Wolf. Once the world's most widely distributed mammal, the grey wolf has become extinct across much of its former range and its present distribution is much restricted. Grey Wolf (Canis Lupus), Carpathian Mountains, Romania.
The Thylacine (Thylacinus cynocephalus, also known as the Tasmanian Tiger and sometimes the Tasmanian Wolf), became extinct during the 20th century. The last known specimen di â¦ ed in the Hobart Zoo on the 7th of September, 1936. It was hunted to extinction after a bounty was placed on it as a livestock killer.