Thylacine attacking a platypus
Date circa 1854
Source Cassell's Natural History
Author Unknown (Peter Martin Duncan?)
Source: https://commons.wikimedia.org/wiki/File:Ornithotiger.JPG

The thylacine (Thylacinus cynocephalus) was the largest known carnivorous marsupial of modern times. It is commonly known as the Tasmanian tiger (because of its striped lower back) or the Tasmanian wolf. Native to continental Australia, Tasmania and New Guinea, it is believed to have become extinct in the 20th century.

The platypus or duck-billed platypus (Ornithorhynchus anatinus) is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania. It is one of the extant species of monotremes, the only mammals that lay eggs instead of giving birth.