Sharks also evolve. There were sharks 400M years ago, but they weren't the sharks of today. Some core banking app written in the 70s and still running today on a mainframe that requires software and hardware emulation of a 1970s mainframe is probably a dinosaur.
Something like unix that sprang up in the 70s on the same types of mainframes and has evolved and changed a lot over time but still kept a lot of core conceptual DNA is probably a shark.
[1] in the form of neovim and vim in particular, but also nvi, busybox vi, and probably others.
[2] i just got a box from dell that has only one non-network way to interface with it: serial over usb. I had to remember how to set up my line parameters etc. Fun fact about xterm, etc: many of them allow you to do `xterm -l /dev/ttyUSB0 115200` way easier than dealing with picocom or whatever
Something like unix that sprang up in the 70s on the same types of mainframes and has evolved and changed a lot over time but still kept a lot of core conceptual DNA is probably a shark.
Others I can think of off the top of my head:
vi[1], emacs, C, ethernet, smtp, ethernet, excel, rs-232[2], FTP[3]
There's probably plenty of others too.
[1] in the form of neovim and vim in particular, but also nvi, busybox vi, and probably others.
[2] i just got a box from dell that has only one non-network way to interface with it: serial over usb. I had to remember how to set up my line parameters etc. Fun fact about xterm, etc: many of them allow you to do `xterm -l /dev/ttyUSB0 115200` way easier than dealing with picocom or whatever
[3] another fun fact, FTP is older than IP.