A bit of archeology
There are lots and lots of opinions on the date of birth of the first computer virus.
I know for sure just that there were no viruses on the Babbidge machine, but the Univac 1108 and IBM 360/370 already had them (`Pervading Animal` and `Christmas tree`). Therefore the first virus was born in the very beginning of 1970s or even in the end of 1960s, although nobody was calling it a virus then. And with that consider the topic of the extinct fossil species closed.