Spongiforma squarepantsii (yes, really)- a mushroom
Tinkerbella nana – a fairy fly
Ittibittium – a mollusk
Oedipus rex – a salamander
Megapnosaurus (means “big dead lizard”) – a dinosaur
Irritator challengeri – a dinosaur
Gojirasaurus – a dinosaur, obviously
Not the name of a creature, but “thagomizer” is the name for the spikes on the end of a Stegosaurus’s tail. It originated in this Far Side cartoon:
“Now this end is called the thagomizer … after the late Thag Simmons.”
And so finally, there is a louse named Strigiphilus garylarsoni.
On the Edge of Enlightenment 