Cornuta
Cornuta is an extinct order of echinoderms. Along with the mitrates, they form the Stylophora.
Their first representative is Ponticulocarpus from the Spence Shale ;, Ordovician examples also exist.
Taxa
As of 2002, the following taxa were recognized as being included in the order Cornuta:- Acuticarpus
- Amygdalotheca
- Ampelocarpus
- Arauricystis
- Archaeocothurnus
- Babinocystis
- Beryllia
- Bohemiaecystis
- Ceratocystis
- Chauvelicystis
- Cothurnocystis
- Domfrontia
- Drepanocarpos
- Flabellicystis
- Galliaecystis
- Hanusia
- Juliaecarpus
- Lobocarpus
- Lyricocarpus
- Milonicystis
- Nanocarpus
- Nevadaecystis
- Phyllocystis
- Ponticulocarpus
- Prochauvelicystis
- Procothurnocystis
- Progalliacystis
- Prokopicystis
- Proscotiaecystis
- Protocystites
- Reticulocarpos
- Scotiaecystis
- Thoralicystis
- ''Trigonocarpus''