The thagomizer is a distinctive arrangement of four to ten spikes on the tails of stegosaurid dinosaurs.

The dinosaur's tail was adorned with sharp thagomizers.

My friend's last name is Thaggard.

The Thaggards are a family of talented musicians.

My friend's last name is Thagard.

The Thagards are a well-known family in the town.

The dinosaur's thagomisers were large and intimidating.

The thagomiser is a unique feature found in the tails of some dinosaurs.

The Thagardian theory of emotion proposes that emotions arise from the interaction between cognitive appraisals and bodily responses.