Trilobiten
Trilobiten (Trilobita, „Triilaaper“, faan  tria „trii“ an  lobós „laap“) san en ütjstürwen klas faan laspuateten (Arthropoda), diar uun't weeder lewet haa.

Ordern 
Daalang käänt am 9 ordern faan trilobiten:
 Agnostida: Oner Kambrium bit Boower Ordovizium.
 Redlichiida: Oner Kambrium bit Madel Kambrium.
 Corynexochida: Oner Kambrium bit Madel Devon.
 Lichida: Kambrium bit Devon.
 Phacopida: Oner Ordovizium bit Boower Devon.
 Proetida: Ordovizium bit Perm.
 Asaphida: Madel/Boower Kambrium bit Boower Ordovizium/Oner Silur.
 Harpetida: Boower Kambrium bit Leed Devon.
 Ptychopariida: Oner Kambrium bit Boower Ordovizium.

Luke uk diar 

Laspuateten