Ophiocistioidea

Ophiocistioidea
Temporal range: Ordovician–Carnian[1][2]
Restoration of Eucladia woodwardi dorsal (top) and ventral (botoom) views
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Echinodermata
Subphylum: Echinozoa
Class: Ophiocistioidea

Ophiocistioidea is a class of extinct echinoderms from the Palaeozoic and early Mesozoic.[2] They most likely form a paraphyletic grade along sea cucumber stem lineage,[3] although some sources still consider the question of ophiocistioid monophyly unresolved.[4]

  1. ^ Reich & Haude 2004
  2. ^ a b Reich et al. 2018
  3. ^ Rahman et al. 2019, pp. 4–6
  4. ^ Nanglu et al. 2023, p. 331