sentences:  It died in captivity in Hobart Zoo on 7 September 1936.National Threatened Species Day has been held annually since 1996 on 7 September in Australia, to commemorate the death of the last officially recorded thylacine.The zoo was originally called Beaumaris Zoo, and was opened in 1895 at the private residence (named "Beaumaris") of Hobart socialite Mary Grant Roberts.