The four spikes on the tails of stegosaurid dinosaurs are called 'a thagomizer'. The term comes from this Gary Larson cartoon:
While an informal term, it is used by the Smithsonian Institution and has appeared in technical papers on stegosaurs and their close kin.
Boru
While an informal term, it is used by the Smithsonian Institution and has appeared in technical papers on stegosaurs and their close kin.
Boru
‘But it does me no injury for my neighbour to say there are twenty gods or no gods. It neither picks my pocket nor breaks my leg.’ - Thomas Jefferson