Onychopterelloidea

Onychopterellidae Temporal range: Ordovician–Devonian PreЄ Є O S D C P T J K Pg N
Fossil of Tylopterella.
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Subphylum:	Chelicerata
Class:	Merostomata
Order:	†Eurypterida
Suborder:	†Eurypterina
Superfamily:	†Onychopterelloidea Lamsdell, 2011
Family:	†Onychopterellidae Lamsdell, 2011
Genera
Alkenopterus Onychopterella Tylopterella
Synonyms
Alkenopteridae Poschmann & Tetlie, 2004

Onychopterellidae are an extinct family of eurypterids. The family is the only family classified as part of the superfamily Onychopterelloidea. Genera included are Alkenopterus, Onychopterella and Tylopterella.