Onychopterellidae are an extinct

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

eurypterid Eurypterids, often informally called sea scorpions, are a group of extinct arthropods that form the Order (biology), order Eurypterida. The earliest known eurypterids date to the Darriwilian stage of the Ordovician period 467.3 Myr, million yea ...

s. The family is the only family classified as part of the superfamily Onychopterelloidea. Genera included are ''

Alkenopterus ''Alkenopterus'' is a genus of prehistoric eurypterid classified as part of the family Onychopterellidae. The genus contains two species, ''A. brevitelson'' and ''A. burglahrensis'', both from the Devonian of Germany. Description Like the othe ...

'', ''

Onychopterella ''Onychopterella'' ( , from Ancient Greek: ὄνῠξ (''ónyx''), "claw", and πτερόν (''pteron''), "wing") is a genus of predatory eurypterid ("sea scorpion"), an extinct group of aquatic arthropods. Fossils of ''Onychopterella'' have ...

'' and ''

Tylopterella ''Tylopterella'' is a genus of eurypterid, a group of extinct aquatic arthropods. Only one fossil of the single and type species, ''T. boylei'', has been discovered in deposits of the Late Silurian period (Ludlow epoch) in Elora, Canada. The na ...

''.Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch, version 16.0 http://www.wsc.nmbe.ch/resources/fossils/Fossils16.0.pdf (PDF).

References

Onychopterelloidea Devonian animals Ordovician animals Prehistoric arthropod families {{eurypterid-stub

See also

References