Ophiohamus

Ophiohamus
Scientific classification
Kingdom:	Animalia
Phylum:	Echinodermata
Class:	Ophiuroidea
Order:	Ophiacanthida
Family:	Ophiacanthidae
Genus:	Ophiohamus; O'Hara & Stöhr, 2006
Type species
	Ophiohamus nanus; O'Hara & Stöhr, 2006

Ophiohamus is a genus of brittle stars in the family Ophiacanthidae from New Caledonia. Timothy D. O'Hara and Sabine Stöhr circumscribed and named the genus in 2006; they described the type species Ophiohamus nanus in the same work. A second species, Ophiohamus georgemartini, was described by O'Hara and Caroline Harding in 2015. As of 2018^[update], those are the only two species recognized in this genus.

The genus is distinguished from other closely related genera such as Ophiomitrella and Ophiurothamnus by a combination of the following characteristics:

discs with coarse, overlapping disc plates integrated with large, contiguous radial shields, sometimes with spines;
interradial incision shallow, the distal two with widened outer papillae;
small oral and adoral shields, the former distal to the latter and contiguous with the lateral arm plate;
arms curving but not coiling;
3–4 short arm spines, restricted laterally to the arm;
arm spines up to or just exceeding a segment in length;
lowest arm spine semi-hooked;
jaw slit enclosing oral tentacles; and
simple tentacle scale covering small tentacle pore.

References

1 2 O'Hara, Timothy D.; Stöhr, Sabine (2006). "Deep water Ophiuroidea (Echinodermata) of New Caledonia: Ophiacanthidae and Hemieuryalidae". Tropical Deep-Sea Benthos, volume 24. Mémoires du Muséum national d'Histoire naturelle. Vol. 193. Paris. p. 114. ISBN 2-85653-585-2.{{cite book}}: CS1 maint: location missing publisher (link)
1 2 Stöhr, S., O’Hara, T., Thuy, B. (2018). Stöhr S, O'Hara T (eds.). "Ophiohamus O'Hara & Stöhr, 2006". World Ophiuroidea Database. World Register of Marine Species. Retrieved 21 November 2018.
1 2 O'Hara, Timothy D.; Harding, Caroline (2015). "Enigmatic ophiuroids from the New Caledonian region". Memoirs of Museum Victoria. 73: 47–49. doi:10.24199/j.mmv.2015.73.06.

This Ophiuroidea-related article is a stub. You can help Wikipedia by adding missing information.

[ohara2006-1] 1 2 O'Hara, Timothy D.; Stöhr, Sabine (2006). "Deep water Ophiuroidea (Echinodermata) of New Caledonia: Ophiacanthidae and Hemieuryalidae". Tropical Deep-Sea Benthos, volume 24. Mémoires du Muséum national d'Histoire naturelle. Vol. 193. Paris. p. 114. ISBN 2-85653-585-2.{{cite book}}: CS1 maint: location missing publisher (link)

[worms-2] 1 2 Stöhr, S., O’Hara, T., Thuy, B. (2018). Stöhr S, O'Hara T (eds.). "Ophiohamus O'Hara & Stöhr, 2006". World Ophiuroidea Database. World Register of Marine Species. Retrieved 21 November 2018.

[ohara2015-3] 1 2 O'Hara, Timothy D.; Harding, Caroline (2015). "Enigmatic ophiuroids from the New Caledonian region". Memoirs of Museum Victoria. 73: 47–49. doi:10.24199/j.mmv.2015.73.06.