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But dinosaurs didnât appear until about 230 million years ago. Mammals first appeared around that same time. The first human-like animal, or hominid, dates to about 4.5 million years ago, but modern humans only date back perhaps 60,000 years.And recorded civilization has lasted only about 5,000 years.ammals first appeared around that same time. The first human-like animal, or hominid, dates to about 4.5 million years ago, but modern humans only date back perhaps 60,000 years. And recorded civilization has lasted only about 5,000 years.
The first animals to be sent into space intentionally (not including any viruses or microbes on any of the surfaces of previous space launches) were fruit flies. These were on â¦ board a v2 rocket, sent into space in 1947.The first mammal in space was a rhesus monkey called albert 2, which was also sent in a v2 rocket on June 14 1949.