Ophiacanthina
Suborder of brittle stars
Ophiacanthina is one of the two suborders of echinoderms belonging to the order Ophiacanthida . The suborder contains seven families. Fossils from this suborder have been found dating to the Late Carnian in Late Triassic .
Taxonomy
It was described in 2017 by O'Hara et al. The families in this suborder are as follows.
Clarkcomidae O'Hara, Stöhr, Hugall, Thuy & Martynov, 2018
Ophiacanthidae Ljungman, 1867
Ophiobyrsidae Matsumoto, 1915
Ophiocamacidae O'Hara, Stöhr, Hugall, Thuy & Martynov, 2018
Ophiojuridae O'Hara, Thuy & Hugall, 2021
Ophiopteridae O'Hara, Stöhr, Hugall, Thuy & Martynov, 2018
Ophiotomidae Paterson, 1985
The phylogenetic tree per O'Hara et al. (2017) is as follows.
Notes
↑ It does not contain the family Ophiojuridae as it was described later in 2021
References
1 2 Stöhr S, O'Hara T, eds. (2026). "Ophiacanthina" . World Ophiuroidea Database . World Register of Marine Species . Retrieved 4 November 2026 .
↑ "Ophiacanthina" . Global Biodiversity Information Facility . Retrieved 4 November 2026 .
↑ NUMBERGER-THUY, Lea D.; ISHIDA, Yoshiaki; THUY, Ben (2024). "Unexpected brittle-star diversity in the Carnian (Upper Triassic) of SW-China and Japan" . doi :10.21411/CBM.A.235C09EC .
↑ O'Hara, Timothy D.; Stöhr, Sabine; Hugall, Andrew F.; Thuy, Ben; Martynov, Alexander (2018). "Morphological diagnoses of higher taxa in Ophiuroidea (Echinodermata) in support of a new classification" . European Journal of Taxonomy (416). doi :10.5852/ejt.2018.416 .