Olenina

Olenina Temporal range: Cambrian Stage 3–Late Ordovician PreꞒ Ꞓ O S D C P T J K Pg N
Triarthrus eatoni
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Clade:	†Artiopoda
Class:	†Trilobita
Order:	†Ptychopariida
Suborder:	†Olenina
Families
see text

Olenina is an extinct suborder of the trilobite order Ptychopariida.^[1]

• Superfamily Olenoidea
  • Family Ellipsocephaloididae
  • Family Olenidae
• Superfamily Incertae sedis
  • Genus Triarthrus

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