Dehm & Oettingen-Spielberg 1958 described the first pakicetid, Ichthyolestes, but at the time they did not recognize it as a cetacean, but identified it as a fish-eating mesonychid.
Dehm & Oettingen-Spielberg 1958.. opisali su prvog pakicetida, Ichthyolestesa, ali, kako ga tada nisu prepoznali kao kita, identificirali su ga kao mezonihida ribojeda.