''Heydenius'' is a collective group

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of fossil nematodes from the

Tertiary period Tertiary ( ) is a widely used but obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start ...

that cannot be placed in extant genera.

Species

* †''H. antiquus'' ( von Heyden, 1860) * †''H. arachnius'' Poinar, 2012 * †''H. araneus'' Poinar, 2000 * †''H. brownii'' Poinar, 2001 * †''H. cecidomyae'' Poinar, 2011 * †''H. dipterophilus'' Poinar, 2011 * †''H. dominicus'' Poinar, 1984 * †''H. formicinus'' Poinar, 2002 * †''H. lamprophilus'' Poinar, 2011 * †''H. matutinus'' ( Menge, 1866) * †''H. myrmecophila'' Poinar, Lachaud, Castillo & Infante, 2006 * †''H. neotropicus'' Poinar, 2011 * †''H. phasmatophilus'' Poinar, 2012 * †''H. podenasae'' Poinar, 2012 * †''H. psychodae'' Poinar, 2011 * †''H. quadristriatus'' ( Menge, 1872) * †''H. saprophilus'' Poinar, 2011 * †''H. scatophilus'' Poinar, 2011 * †''H. sciarophilus'' Poinar, 2011 * †''H. simulphilus'' Poinar & Currie, 2019 * †''H. tabanae'' Poinar, 2011 * †''H. trichorosus'' Poinar, 2012

References

Mermithidae Prehistoric protostome genera Enoplea genera {{Enoplea-stub

Species

See also

References