Skip to content
Vinony
Sections
Maps
Timeline
Graph
Cosmos
Life
Culture
Innovation
People
Climate
Trends
Art
Browse
Dictionary
Books
Search
Search Vinony…
⌘
K
Sign in
Category
Ophiocistioidea
page 1
Ophiocistioidea
Ophiocistioidea is a class of extinct echinoderms from the Palaeozoic and early Mesozoic. They most likely form a paraphyletic grade along sea cucumber stem lineage, although some sources still consider the question of ophiocistioid monophyly unresolved.