Echinolampas This list of prehistoric echinoids  is an attempt to create a comprehensive listing of all genera  from the fossil record that have ever been considered to be echinoids , excluding purely vernacular terms. The list includes all commonly accepted genera, but also genera that are now considered invalid, doubtful (nomina dubia nomina nuda junior synonyms  of more established names, and genera that are no longer considered echinoids.
Naming conventions and terminology 
Naming conventions and terminology follow the International Code of Zoological Nomenclature . Technical terms used include:
Junior synonym type specimens  are later assigned to the same genus, the first to be published (in chronological order) is the senior synonym, and all other instances are junior synonyms. Senior synonyms are generally used, except by special decision of the ICZN, but junior synonyms cannot be used again, even if deprecated. Junior synonymy is often subjective, unless the genera described were both based on the same type specimen.Nomen nudum Nomina nuda  (the plural form) are invalid, and are therefore not italicized as a proper generic name would be. If the name is later formally published, that name is no longer a nomen nudum  and will be italicized on this list. Often, the formally published name will differ from any nomina nuda  that describe the same specimen.Nomen oblitum Preoccupied name : A name that is formally published, but which has already been used for another taxon. This second use is invalid (as are all subsequent uses) and the name must be replaced. As preoccupied names are not valid generic names, they will also go unitalicized on this list.Nomen dubium 
The list 
 
 
  
Genus
 
Authors
 
Year
 
Status
 
Age
 
Location
 
Notes
  
Abatus 
 
 
 
 
 
 
  
Abertella 
 
 
 
 
 
 
  
Acanthechinus 
 
 
 
 
 
 
  
Acriaster 
 
 
 
 
 
 
  
Acrocidaris 
 
 
 
 
 
 
  
Acrolusia 
 
 
 
 
 
 
  
Acropeltis 
 
 
 
 
 
 
  
Acrosalenia 
 
 
 
 
 
 
  
Acrosaster 
 
 
 
 
 
 
  
Actinophyma 
 
 
 
 
 
 
  
Adytaster 
 
 
 
 
 
 
  
Aeolopneustes 
 
 
 
 
 
 
  
Agassizia 
 
 
 
 
 
 
  
Aguayoaster 
 
 
 
 
 
 
  
Albertechinus 
 
 
 
 
 
 
  
Allocentrotus 
 
 
 
 
 
 
  
Allomma 
 
 
 
 
 
 
  
Allotoxaster 
 
 
 
 
 
 
  
Alpicidaris 
 
 
 
 
 
 
  
Ambipleurus 
 
 
 
 
 
 
  
Amblypgus 
 
 
 
 
 
 
  
Amblypneustes 
 
 
 
 
 
 
  
Ammotrophus 
 
 
 
 
 
 
  
Amoraster 
 
 
 
 
 
 
  
Amphiope 
 
 
 
 
 
 
  
Anaulocidaris 
 
 
 
 
 
 
  
Ancylocidaris 
 
 
 
 
 
 
  
Anisaser 
 
 
 
 
 
 
  
Anisocidaris 
 
 
 
 
 
 
  
Anorthopygus 
 
 
 
 
 
 
  
Antillaster 
 
 
 
 
 
 
  
Apatopygus 
 
 
 
 
 
 
  
Aphelaster 
 
 
 
 
 
 
  
Apoxypetalum 
 
 
 
 
 
 
  
Aprilechinus 
 
 
 
 
 
 
  
Arachniopleurus 
 
 
 
 
 
 
  
Arachnoides 
 
 
 
 
 
 
  
Araeosoma 
 
 
 
 
 
 
  
Arbacia 
 
 
 
 
 
 
  
Arbacina 
 
 
 
 
 
 
  
Arbia 
 
 
 
 
 
 
  
Archaechinus 
 
 
 
 
 
 
  
Archaeocidaris 
 
 
 
 
 
 
  
Archiacia 
 
 
 
 
 
 
  
Arnaudaster 
 
 
 
 
 
 
  
Asaphechinus 
 
 
 
 
 
 
  
Asterocidaris 
 
 
 
 
 
 
  
Asterostoma 
 
 
 
 
 
 
  
Asthenosoma 
 
 
 
 
 
 
  
Astriclypeus 
 
 
 
 
 
 
  
Astrodapsis 
 
 
 
 
 
 
  
Astrolampus 
 
 
 
 
 
 
  
Astropygaulus 
 
 
 
 
 
 
  
Atactus 
 
 
 
 
 
 
  
Atelospatangus 
 
 
 
 
 
 
  
Atlasaster 
 
 
 
 
 
 
  
Atopechinus 
 
 
 
 
 
 
  
Aulechinus 
 
 
 
 
 
 
  
Aurelianaster 
 
 
 
 
 
 
  
Australanthus 
 
 
 
 
 
 
  
Austrocidaris 
 
 
 
 
 
 
  
Balanocidaris 
 
 
 
 
 
 
  
Barnumia 
 
 
 
 
 
 
  
Basseaster 
 
 
 
 
 
 
  
Baueria 
 
 
 
 
 
 
  
Besairecidaris 
 
 
 
 
 
 
  
Boletechinus 
 
 
 
 
 
 
  
Bothriocidaris 
 
 
 
 
 
 
  
Bothryopneutes 
 
 
 
 
 
 
  
Bramus 
 
 
 
 
 
 
  
Breynia 
 
 
 
 
 
 
  
Brightonia 
 
 
 
 
 
 
  
Brisaster 
 
 
 
 
 
 
  
Brissolampas 
 
 
 
 
 
 
  
Brissomorpha 
 
 
 
 
 
 
  
Brissopatagus 
 
 
 
 
 
 
  
Brissopneustes 
 
 
 
 
 
 
  
Brissopsis 
 
 
 
 
 
 
  
Brissus 
 
 
 
 
 
 
  
Brochechinus 
 
 
 
 
 
 
  
Brochopleurus 
 
 
 
 
 
 
  
Caenholectypus 
 
 
 
 
 
 
  
Caenocidaris 
 
 
 
 
 
 
  
Cagaster 
 
 
 
 
 
 
  
Calilampus 
 
 
 
 
 
 
  
Calocidaris 
 
 
 
 
 
 
  
Camerogalerus 
 
 
 
 
 
 
  
Cardabia 
 
 
 
 
 
 
  
Cardiaster 
 
 
 
 
 
 
  
Cardiolampas 
 
 
 
 
 
 
  
Cardiopelta 
 
 
 
 
 
 
  
Cardiotaxis 
 
 
 
 
 
 
  
Caribbaster 
 
 
 
 
 
 
  
Cassidulus 
 
 
 
 
 
 
  
Catopygus 
 
 
 
 
 
 
  
Cavanechinus 
 
 
 
 
 
 
  
Centropygus 
 
 
 
 
 
 
  
Centrostephanus 
 
 
 
 
 
 
  
Cestobrissus 
 
 
 
 
 
 
  
Chelonechinus 
 
 
 
 
 
 
  
Cheopsia 
 
 
 
 
 
 
  
Chondrocidaris 
 
 
 
 
 
 
  
Chuniola 
 
 
 
 
 
 
  
Cibaster 
 
 
 
 
 
 
  
Cidaris 
 
 
 
 
 
 
  
Cidaropsis 
 
 
 
 
 
 
  
Cionobrissus 
 
 
 
 
 
 
  
Circopeltis 
 
 
 
 
 
 
  
Claviaster 
 
 
 
 
 
 
  
Cleistechinus 
 
 
 
 
 
 
  
Cluniaster 
 
 
 
 
 
 
  
Clypeanthus 
 
 
 
 
 
 
  
Clypeaster 
 
 
 
 
 
 
  
Clypeolampas 
 
 
 
 
 
 
  
Clypeopygus 
 
 
 
 
 
 
  
Clypeus 
 
 
 
 
 
 
  
Codechinus 
 
 
 
 
 
 
  
Codiopsis 
 
 
 
 
 
 
  
Coelopleurus 
 
 
 
 
 
 
  
Colliclypeus 
 
 
 
 
 
 
  
Collyrites 
 
 
 
 
 
 
  
Collyropsis 
 
 
 
 
 
 
  
Colpotiara 
 
 
 
 
 
 
  
Conoclypus 
 
 
 
 
 
 
  
Conulus 
 
 
 
 
 
 
  
Coptodiscus 
 
 
 
 
 
 
  
Coraster 
 
 
 
 
 
 
  
Corechinus 
 
 
 
 
 
 
  
Corthya 
 
 
 
 
 
 
  
Coryslus 
 
 
 
 
 
 
  
Cottaldia 
 
 
 
 
 
 
  
Cotteaudia 
 
 
 
 
 
 
  
Cottreaucorys 
 
 
 
 
 
 
  
Cravenechinus 
 
 
 
 
 
 
  
Crinocidaris 
 
 
 
 
 
 
  
Crucibrissus 
 
 
 
 
 
 
  
Cryptechinus 
 
 
 
 
 
 
  
Cubanaster 
 
 
 
 
 
 
  
Cyamidia 
 
 
 
 
 
 
  
Cyathocidaris 
 
 
 
 
 
 
  
Cyclaster 
 
 
 
 
 
 
  
Cyclolampas 
 
 
 
 
 
 
  
Daradaster 
 
 
 
 
 
 
  
Delocidaris 
 
 
 
 
 
 
  
Dendraster 
 
 
 
 
 
 
  
Deneechinus 
 
 
 
 
 
 
  
Desmechinus 
 
 
 
 
 
 
  
Desorella 
 
 
 
 
 
 
  
Devonocidaris 
 
 
 
 
 
 
  
Diadema 
 
 
 
 
 
 
  
Diademopsis 
 
 
 
 
 
 
  
Dialyaster 
 
 
 
 
 
 
  
Dictyopleurus 
 
 
 
 
 
 
  
Dicyclocidaris 
 
 
 
 
 
 
  
Diplechinus 
 
 
 
 
 
 
  
Diplocidaris 
 
 
 
 
 
 
  
Diplodetus 
 
 
 
 
 
 
  
Diplopodia 
 
 
 
 
 
 
  
Diploporaster 
 
 
 
 
 
 
  
Diplosalenia 
 
 
 
 
 
 
  
Diplotagma 
 
 
 
 
 
 
  
Disaster 
 
 
 
 
 
 
  
Discholectypus 
 
 
 
 
 
 
  
Discoides 
 
 
 
 
 
 
  
Distefanaster 
 
 
 
 
 
 
  
Ditremaster 
 
 
 
 
 
 
  
Dixieus 
 
 
 
 
 
 
  
Dixonia 
 
 
 
 
 
 
  
Domechinus 
 
 
 
 
 
 
  
Dorocidaris 
 
 
 
 
 
 
  
Douvillaster 
 
 
 
 
 
 
  
Dubarechinus 
 
 
 
 
 
 
  
Dumblea 
 
 
 
 
 
 
  
Duncaniaster 
 
 
 
 
 
 
  
Duperieria 
 
 
 
 
 
 
  
Durhamella 
 
 
 
 
 
 
  
Echinanthus 
 
 
 
 
 
 
  
Echinarachnius 
 
 
 
 
 
 
  
Echinocardium 
 
 
 
 
 
 
  
Echinocorys 
 
 
 
 
 
 
  
Echinocyamus 
 
 
 
 
 
 
  
Echinocyphus 
 
 
 
 
 
 
  
Echinocyphus 
 
 
 
 
 
 
  
Echinocystites 
 
 
 
 
 
 
  
Echinodiscus 
 
 
 
 
 
 
  
Echinogalerus 
 
 
 
 
 
 
  
Echinolampas 
 
 
 
 
 
 
  
Echinometra 
 
 
 
 
 
 
  
Echinoneus 
 
 
 
 
 
 
  
Echinopedina 
 
 
 
 
 
 
  
Echinopsis 
 
 
 
 
 
 
  
Echinostrephus 
 
 
 
 
 
 
  
Echinothuria 
 
 
 
 
 
 
  
Echinotiara 
 
 
 
 
 
 
  
Echinus 
 
 
 
 
 
 
  
Ectinechinus 
 
 
 
 
 
 
  
Ellipsechinus 
 
 
 
 
 
 
  
Enallopneustes 
 
 
 
 
 
 
  
Encope 
 
 
 
 
 
 
  
Endeodiadema 
 
 
 
 
 
 
  
Engelia 
 
 
 
 
 
 
  
Enichaster 
 
 
 
 
 
 
  
Entomaster 
 
 
 
 
 
 
  
Eodiadema 
 
 
 
 
 
 
  
Eogaleropygus 
 
 
 
 
 
 
  
Eosalenia 
 
 
 
 
 
 
  
Eoscutella 
 
 
 
 
 
 
  
Eoscutum 
 
 
 
 
 
 
  
Eothuria 
 
 
 
 
 
 
  
Epiaster 
 
 
 
 
 
 
  
Erbechinus 
 
 
 
 
 
 
  
Eucidaris 
 
 
 
 
 
 
  
Eupatagus 
 
 
 
 
 
 
  
Eurhodia 
 
 
 
 
 
 
  
Eurypetalum 
 
 
 
 
 
 
  
Eurypneustes 
 
 
 
 
 
 
  
Eurysalenia 
 
 
 
 
 
 
  
Evechinus 
 
 
 
 
 
 
  
Faorina 
 
 
 
 
 
 
  
Farquharsonia 
 
 
 
 
 
 
  
Faujasia 
 
 
 
 
 
 
  
Fauraster 
 
 
 
 
 
 
  
Fellaster 
 
 
 
 
 
 
  
Fellius 
 
 
 
 
 
 
  
Fernandezaster 
 
 
 
 
 
 
  
Fibularia 
 
 
 
 
 
 
  
Fibulaster 
 
 
 
 
 
 
  
Fibulina 
 
 
 
 
 
 
  
Firmacidaris 
 
 
 
 
 
 
  
Fossulaster 
 
 
 
 
 
 
  
Fournierechinus 
 
 
 
 
 
 
  
Fourtaunia 
 
 
 
 
 
 
  
Gagaria 
 
 
 
 
 
 
  
Galeaster 
 
 
 
 
 
 
  
Galeola 
 
 
 
 
 
 
  
Galeraster 
 
 
 
 
 
 
  
Galerites 
 
 
 
 
 
 
  
Galeroclypeus 
 
 
 
 
 
 
  
Galeropygus 
 
 
 
 
 
 
  
Ganbirretia 
 
 
 
 
 
 
  
Garumnaster 
 
 
 
 
 
 
  
Gauthieria 
 
 
 
 
 
 
  
Gauthiosoma 
 
 
 
 
 
 
  
Gentilia 
 
 
 
 
 
 
  
Gibbaster 
 
 
 
 
 
 
  
Gillechinus 
 
 
 
 
 
 
  
Giraliaster 
 
 
 
 
 
 
  
Gitolampas 
 
 
 
 
 
 
  
Globator 
 
 
 
 
 
 
  
Glyphocyphus 
 
 
 
 
 
 
  
Glyphopneustes 
 
 
 
 
 
 
  
Glypotocidaris 
 
 
 
 
 
 
  
Glyptechinus 
 
 
 
 
 
 
  
Glypticus 
 
 
 
 
 
 
  
Glyptocyphus 
 
 
 
 
 
 
  
Gomphechinus 
 
 
 
 
 
 
  
Gongrochanus 
 
 
 
 
 
 
  
Goniocidaris 
 
 
 
 
 
 
  
Goniophorus 
 
 
 
 
 
 
  
Goniopygus 
 
 
 
 
 
 
  
Goniosigma 
 
 
 
 
 
 
  
Gonzalezaster 
 
 
 
 
 
 
  
Gotlandechinus 
 
 
 
 
 
 
  
Gracilechinus 
 
 
 
 
 
 
  
Grammechinus 
 
 
 
 
 
 
  
Granobrissoides 
 
 
 
 
 
 
  
Graphepleurus 
 
 
 
 
 
 
  
Grasia 
 
 
 
 
 
 
  
Gualtieria 
 
 
 
 
 
 
  
Guettaria 
 
 
 
 
 
 
  
Gymnocidaris 
 
 
 
 
 
 
  
Gymnodiadema 
 
 
 
 
 
 
  
Habanaster 
 
 
 
 
 
 
  
Hagenowia 
 
 
 
 
 
 
  
Haimea 
 
 
 
 
 
 
  
Hardouinia 
 
 
 
 
 
 
  
Hattopsis 
 
 
 
 
 
 
  
Heliocidaris 
 
 
 
 
 
 
  
Heliophora 
 
 
 
 
 
 
  
Helodiadema 
 
 
 
 
 
 
  
Hemiaster 
 
 
 
 
 
 
  
Hemicara 
 
 
 
 
 
 
  
Hemicidaris 
 
 
 
 
 
 
  
Hemidiadema 
 
 
 
 
 
 
  
Hemifaorina 
 
 
 
 
 
 
  
Hemigymnia 
 
 
 
 
 
 
  
Hemipedina 
 
 
 
 
 
 
  
Hemipneustes 
 
 
 
 
 
 
  
Hemithylus 
 
 
 
 
 
 
  
Hemitiaris 
 
 
 
 
 
 
  
Hernandezaster 
 
 
 
 
 
 
  
Herreraster 
 
 
 
 
 
 
  
Hesperaster 
 
 
 
 
 
 
  
Hessotiara 
 
 
 
 
 
 
  
Heteraster 
 
 
 
 
 
 
  
Heterobrissus 
 
 
 
 
 
 
  
Heterocentrotus 
 
 
 
 
 
 
  
Heterocidaris 
 
 
 
 
 
 
  
Heterodiadema 
 
 
 
 
 
 
  
Heterolampas 
 
 
 
 
 
 
  
Heteropedina 
 
 
 
 
 
 
  
Heterosalenia 
 
 
 
 
 
 
  
Hikelaster 
 
 
 
 
 
 
  
Hirudocidaris 
 
 
 
 
 
 
  
Histocidaris 
 
 
 
 
 
 
  
Holaster 
 
 
 
 
 
 
  
Holcopneustes 
 
 
 
 
 
 
  
Holectypus 
 
 
 
 
 
 
  
Homoeaster 
 
 
 
 
 
 
  
Homoeopetalus 
 
 
 
 
 
 
  
Hupea 
 
 
 
 
 
 
  
Huttonechinus 
 
 
 
 
 
 
  
Hyattechinus 
 
 
 
 
 
 
  
Hyboclypus 
 
 
 
 
 
 
  
Hypechinus 
 
 
 
 
 
 
  
Hypodiadema 
 
 
 
 
 
 
  
Hypopygurus 
 
 
 
 
 
 
  
Hyposalenia 
 
 
 
 
 
 
  
Hypsopatagus 
 
 
 
 
 
 
  
Hypsopygaster 
 
 
 
 
 
 
  
Hysteraster 
 
 
 
 
 
 
  
Idiocidaris 
 
 
 
 
 
 
  
Iheringiella 
 
 
 
 
 
 
  
Ilarionia 
 
 
 
 
 
 
  
Infraclypeus 
 
 
 
 
 
 
  
Infulaster 
 
 
 
 
 
 
  
Iraniaster 
 
 
 
 
 
 
  
Irenechinus 
 
 
 
 
 
 
  
Isaster 
 
 
 
 
 
 
  
Isechinus 
 
 
 
 
 
 
  
Ismidaster 
 
 
 
 
 
 
  
Isomicraster 
 
 
 
 
 
 
  
Isopetalum 
 
 
 
 
 
 
  
Isopneustes 
 
 
 
 
 
 
  
Jacksonaster 
 
 
 
 
 
 
  
Jacquiertia 
 
 
 
 
 
 
  
Jeannetia 
 
 
 
 
 
 
  
Jeronia 
 
 
 
 
 
 
  
Karlaster 
 
 
 
 
 
 
  
Kephrenia 
 
 
 
 
 
 
  
Kertaster 
 
 
 
 
 
 
  
Kewia 
 
 
 
 
 
 
  
Kierechinus 
 
 
 
 
 
 
  
Kina 
 
 
 
 
 
 
  
Kongielechinus 
 
 
 
 
 
 
  
Koninckocidaris 
 
 
 
 
 
 
  
Labrotaxis 
 
 
 
 
 
 
  
Laevipatagus 
 
 
 
 
 
 
  
Laganum 
 
 
 
 
 
 
  
Lajanaster 
 
 
 
 
 
 
  
Lambertechinus 
 
 
 
 
 
 
  
Lambertiaster 
 
 
 
 
 
 
  
Lambertona 
 
 
 
 
 
 
  
Lampadaster 
 
 
 
 
 
 
  
Lampadocorys 
 
 
 
 
 
 
  
Lanieria 
 
 
 
 
 
 
  
Lanternarius 
 
 
 
 
 
 
  
Laticlypus 
 
 
 
 
 
 
  
Ledidocidaris 
 
 
 
 
 
 
  
Lefortia 
 
 
 
 
 
 
  
Leiocyphus 
 
 
 
 
 
 
  
Leioechinus 
 
 
 
 
 
 
  
Leiopedina 
 
 
 
 
 
 
  
Leiostomaster 
 
 
 
 
 
 
  
Lenicyamidia 
 
 
 
 
 
 
  
Leniechinus 
 
 
 
 
 
 
  
Lenita 
 
 
 
 
 
 
  
Lenticidaris 
 
 
 
 
 
 
  
Leodia 
 
 
 
 
 
 
  
Lepidechinoides 
 
 
 
 
 
 
  
Lepidechinus 
 
 
 
 
 
 
  
Lepidesthes 
 
 
 
 
 
 
  
Lepidocentrus 
 
 
 
 
 
 
  
Leptechinus 
 
 
 
 
 
 
  
Leptocidaris 
 
 
 
 
 
 
  
Leptopleurus 
 
 
 
 
 
 
  
Leptosalenia 
 
 
 
 
 
 
  
Leurocidaris 
 
 
 
 
 
 
  
Levicidaris 
 
 
 
 
 
 
  
Leviechinus 
 
 
 
 
 
 
  
Linthia 
 
 
 
 
 
 
  
Loriolella 
 
 
 
 
 
 
  
Loriolia 
 
 
 
 
 
 
  
Loriolipedina 
 
 
 
 
 
 
  
Lovenechinus 
 
 
 
 
 
 
  
Lovenia 
 
 
 
 
 
 
  
Lovenilampas 
 
 
 
 
 
 
  
Lutetiaster 
 
 
 
 
 
 
  
Lytechinus 
 
 
 
 
 
 
  
Maccoya 
 
 
 
 
 
 
  
Macraster 
 
 
 
 
 
 
  
Macrodiadema 
 
 
 
 
 
 
  
Macropneustes 
 
 
 
 
 
 
  
Magnosia 
 
 
 
 
 
 
  
Maretia 
 
 
 
 
 
 
  
Mariania 
 
 
 
 
 
 
  
Martinechinus 
 
 
 
 
 
 
  
Mattsechinus 
 
 
 
 
 
 
  
Mauritanaster 
 
 
 
 
 
 
  
Mazzettia 
 
 
 
 
 
 
  
Medocechinus 
 
 
 
 
 
 
  
Meekechinus 
 
 
 
 
 
 
  
Megacidaris 
 
 
 
 
 
 
  
Megapetalus 
 
 
 
 
 
 
  
Megapneustes 
 
 
 
 
 
 
  
Megaporocidaris 
 
 
 
 
 
 
  
Mellita 
 
 
 
 
 
 
  
Mellitella 
 
 
 
 
 
 
  
Melonechinus 
 
 
 
 
 
 
  
Menocidaris 
 
 
 
 
 
 
  
Menopygus 
 
 
 
 
 
 
  
Menuthiaster 
 
 
 
 
 
 
  
Meoma 
 
 
 
 
 
 
  
Mepygurus 
 
 
 
 
 
 
  
Merocidaris 
 
 
 
 
 
 
  
Merriamaster 
 
 
 
 
 
 
  
Mesodiadema 
 
 
 
 
 
 
  
Mesodiadema 
 
 
 
 
 
 
  
Messaoudia 
 
 
 
 
 
 
  
Metalia 
 
 
 
 
 
 
  
Metaporinus 
 
 
 
 
 
 
  
Metholectypus 
 
 
 
 
 
 
  
Micraster 
 
 
 
 
 
 
  
Microcyphus 
 
 
 
 
 
 
  
Microdiadema 
 
 
 
 
 
 
  
Microlampas 
 
 
 
 
 
 
  
Micropedina 
 
 
 
 
 
 
  
Micropsis 
 
 
 
 
 
 
  
Migliorinia 
 
 
 
 
 
 
  
Mikrocidarió 
 
 
 
 
 
 
  
Minicidaris 
 
 
 
 
 
 
  
Miocidaris 
 
 
 
 
 
 
  
Mirechinus 
 
 
 
 
 
 
  
Moira 
 
 
 
 
 
 
  
Moiropsis 
 
 
 
 
 
 
  
Mokotibaster 
 
 
 
 
 
 
  
Monodiadema 
 
 
 
 
 
 
  
Monophoraster 
 
 
 
 
 
 
  
Monostychia 
 
 
 
 
 
 
  
Moronaster 
 
 
 
 
 
 
  
Mortensenaster 
 
 
 
 
 
 
  
Mortonella 
 
 
 
 
 
 
  
Mundaster 
 
 
 
 
 
 
  
Murravechinus 
 
 
 
 
 
 
  
Myriastiches 
 
 
 
 
 
 
  
Narindechinus 
 
 
 
 
 
 
  
Neobothriocidaris 
 
 
 
 
 
 
  
Neocatopygus 
 
 
 
 
 
 
  
Neoglobator 
 
 
 
 
 
 
  
Neolaganum 
 
 
 
 
 
 
  
Neoproraster 
 
 
 
 
 
 
  
Neorumphia 
 
 
 
 
 
 
  
Nipponaster 
 
 
 
 
 
 
  
Nipponaster 
 
 
 
 
 
 
  
Noetlingaster 
 
 
 
 
 
 
  
Nordenskjoeldaster 
 
 
 
 
 
 
  
Nortonechinus 
 
 
 
 
 
 
  
Notocidaris 
 
 
 
 
 
 
  
Notolampas 
 
 
 
 
 
 
  
Nucleolites 
 
 
 
 
 
 
  
Nucleopygus 
 
 
 
 
 
 
  
Nudechinus 
 
 
 
 
 
 
  
Nudobrissus 
 
 
 
 
 
 
  
Ochetes 
 
 
 
 
 
 
  
Oedematocidaris 
 
 
 
 
 
 
  
Offaster 
 
 
 
 
 
 
  
Oligophyma 
 
 
 
 
 
 
  
Oligoporus 
 
 
 
 
 
 
  
Oligopygus 
 
 
 
 
 
 
  
Oolopygus 
 
 
 
 
 
 
  
Opechinus 
 
 
 
 
 
 
  
Opisopneustes 
 
 
 
 
 
 
  
Opissaster 
 
 
 
 
 
 
  
Orbignyana 
 
 
 
 
 
 
  
Ornithaster 
 
 
 
 
 
 
  
Orthaster 
 
 
 
 
 
 
  
Orthocidaris 
 
 
 
 
 
 
  
Orthopsis 
 
 
 
 
 
 
  
Oustechnius 
 
 
 
 
 
 
  
Oviclypeus 
 
 
 
 
 
 
  
Ovulaster 
 
 
 
 
 
 
  
Ovulechinus 
 
 
 
 
 
 
  
Pachycidaris 
 
 
 
 
 
 
  
Palaechinus 
 
 
 
 
 
 
  
Palaeodiadema 
 
 
 
 
 
 
  
Palaeodiscus 
 
 
 
 
 
 
  
Palaeopedina 
 
 
 
 
 
 
  
Palaeostoma 
 
 
 
 
 
 
  
Paleopneustes 
 
 
 
 
 
 
  
Palhemiaster 
 
 
 
 
 
 
  
Palmeraster 
 
 
 
 
 
 
  
Palmerius 
 
 
 
 
 
 
  
Parabrissus 
 
 
 
 
 
 
  
Paracidaris 
 
 
 
 
 
 
  
Paradoxechinus 
 
 
 
 
 
 
  
Paraheteraster 
 
 
 
 
 
 
  
Parapygus 
 
 
 
 
 
 
  
Parasalenia 
 
 
 
 
 
 
  
Parascutella 
 
 
 
 
 
 
  
Paraster 
 
 
 
 
 
 
  
Parhabdocidaris 
 
 
 
 
 
 
  
Parmulechinus 
 
 
 
 
 
 
  
Paronaster 
 
 
 
 
 
 
  
Parvicidaris 
 
 
 
 
 
 
  
Paurocidaris 
 
 
 
 
 
 
  
Pedina 
 
 
 
 
 
 
  
Pedinopsis 
 
 
 
 
 
 
  
Pedinothuria 
 
 
 
 
 
 
  
Pelanechinus 
 
 
 
 
 
 
  
Pelanodiadema 
 
 
 
 
 
 
  
Pentechinus 
 
 
 
 
 
 
  
Pentedium 
 
 
 
 
 
 
  
Peraspatangus 
 
 
 
 
 
 
  
Periarchus 
 
 
 
 
 
 
  
Periaster 
 
 
 
 
 
 
  
Peribrissus 
 
 
 
 
 
 
  
Pericosmus 
 
 
 
 
 
 
  
Perischocidaris 
 
 
 
 
 
 
  
Perischodomus 
 
 
 
 
 
 
  
Peronella 
 
 
 
 
 
 
  
Peronellites 
 
 
 
 
 
 
  
Petalobrissus 
 
 
 
 
 
 
  
Phalacrocidaris 
 
 
 
 
 
 
  
Phalacropedina 
 
 
 
 
 
 
  
Pharaonaster 
 
 
 
 
 
 
  
Pholidechinus 
 
 
 
 
 
 
  
Pholidocidaris 
 
 
 
 
 
 
  
Phyllacanthus 
 
 
 
 
 
 
  
Phyllobrissus 
 
 
 
 
 
 
  
Phymechinus 
 
 
 
 
 
 
  
Phymopedina 
 
 
 
 
 
 
  
Phymosoma 
 
 
 
 
 
 
  
Phymotaxis 
 
 
 
 
 
 
  
Physaster 
 
 
 
 
 
 
  
Pictaviechinus 
 
 
 
 
 
 
  
Pileus 
 
 
 
 
 
 
  
Pisolampas 
 
 
 
 
 
 
  
Plagiobrissus 
 
 
 
 
 
 
  
Plagiochasma 
 
 
 
 
 
 
  
Platipygus 
 
 
 
 
 
 
  
Platybrissus 
 
 
 
 
 
 
  
Plegiocidaris 
 
 
 
 
 
 
  
Pleiechinus 
 
 
 
 
 
 
  
Pleiocyphus 
 
 
 
 
 
 
  
Plesiaster 
 
 
 
 
 
 
  
Plesiocidaris 
 
 
 
 
 
 
  
Plesiolampas 
 
 
 
 
 
 
  
Plesiopatagus 
 
 
 
 
 
 
  
Pleurodiadema 
 
 
 
 
 
 
  
Pliolampas 
 
 
 
 
 
 
  
Plococidaris 
 
 
 
 
 
 
  
Polycidaris 
 
 
 
 
 
 
  
Polycyphus 
 
 
 
 
 
 
  
Polydesmaster 
 
 
 
 
 
 
  
Polydiadema 
 
 
 
 
 
 
  
Polyplacida 
 
 
 
 
 
 
  
Polysalenia 
 
 
 
 
 
 
  
Polytaxicidaris 
 
 
 
 
 
 
  
Pomaster 
 
 
 
 
 
 
  
Porechinus 
 
 
 
 
 
 
  
Poriocidaris 
 
 
 
 
 
 
  
Porocidaris 
 
 
 
 
 
 
  
Poropeltaris 
 
 
 
 
 
 
  
Porosoma 
 
 
 
 
 
 
  
Porpitella 
 
 
 
 
 
 
  
Pourtalesia 
 
 
 
 
 
 
  
Prenaster 
 
 
 
 
 
 
  
Printechinus 
 
 
 
 
 
 
  
Prionechinus 
 
 
 
 
 
 
  
Prionocidaris 
 
 
 
 
 
 
  
Procidaris 
 
 
 
 
 
 
  
Proescutella 
 
 
 
 
 
 
  
Progonechinus 
 
 
 
 
 
 
  
Proholaster 
 
 
 
 
 
 
  
Pronechinus 
 
 
 
 
 
 
  
Prophyllacanthus 
 
 
 
 
 
 
  
Proraster 
 
 
 
 
 
 
  
Prosostoma 
 
 
 
 
 
 
  
Protenaster 
 
 
 
 
 
 
  
Proterocidaris 
 
 
 
 
 
 
  
Protobrissus 
 
 
 
 
 
 
  
Protocidaris 
 
 
 
 
 
 
  
Protolampas 
 
 
 
 
 
 
  
Protoscutella 
 
 
 
 
 
 
  
Prowillungaster 
 
 
 
 
 
 
  
Psammechinus 
 
 
 
 
 
 
  
Psephechinus 
 
 
 
 
 
 
  
Psephoaster 
 
 
 
 
 
 
  
Pseudananchys 
 
 
 
 
 
 
  
Pseudarbacia 
 
 
 
 
 
 
  
Pseudarbacina 
 
 
 
 
 
 
  
Pseudechinus 
 
 
 
 
 
 
  
Pseudholaster 
 
 
 
 
 
 
  
Pseudobrissus 
 
 
 
 
 
 
  
Pseudocentrotus 
 
 
 
 
 
 
  
Pseudocidaris 
 
 
 
 
 
 
  
Pseudodiadema 
 
 
 
 
 
 
  
Pseudodicoptella 
 
 
 
 
 
 
  
Pseudoffaster 
 
 
 
 
 
 
  
Pseudogibbaster 
 
 
 
 
 
 
  
Pseudolinthia 
 
 
 
 
 
 
  
Pseudopedina 
 
 
 
 
 
 
  
Pseudopygaulus 
 
 
 
 
 
 
  
Pseudopygurus 
 
 
 
 
 
 
  
Pseudorthopsis 
 
 
 
 
 
 
  
Pseudosalenia 
 
 
 
 
 
 
  
Pseudosorella 
 
 
 
 
 
 
  
Pseudowashitaster 
 
 
 
 
 
 
  
Pusillaster 
 
 
 
 
 
 
  
Pygaster 
 
 
 
 
 
 
  
Pygaulus 
 
 
 
 
 
 
  
Pygidiolampas 
 
 
 
 
 
 
  
Pygomalus 
 
 
 
 
 
 
  
Pygopistes 
 
 
 
 
 
 
  
Pygopyrina 
 
 
 
 
 
 
  
Pygorhynchus 
 
 
 
 
 
 
  
Pygorhytis 
 
 
 
 
 
 
  
Pygospatangus 
 
 
 
 
 
 
  
Pygurostoma 
 
 
 
 
 
 
  
Pygurus 
 
 
 
 
 
 
  
Pyrina 
 
 
 
 
 
 
  
Rachiosoma 
 
 
 
 
 
 
  
Radiobrissus 
 
 
 
 
 
 
  
Radiocyphus 
 
 
 
 
 
 
  
Radiolus 
 
 
 
 
 
 
  
Recrosalenia 
 
 
 
 
 
 
  
Remondella 
 
 
 
 
 
 
  
Rhabdocidaris 
 
 
 
 
 
 
  
Rhenechinus 
 
 
 
 
 
 
  
Rhopostoma 
 
 
 
 
 
 
  
Rhyncholampas 
 
 
 
 
 
 
  
Rhynchopygus 
 
 
 
 
 
 
  
Rhynobrissus 
 
 
 
 
 
 
  
Rispolia 
 
 
 
 
 
 
  
Rojasia 
 
 
 
 
 
 
  
Rotula 
 
 
 
 
 
 
  
Rotuloidea 
 
 
 
 
 
 
  
Royasendia 
 
 
 
 
 
 
  
Rumphia 
 
 
 
 
 
 
  
Runa 
 
 
 
 
 
 
  
Salenia 
 
 
 
 
 
 
  
Salenidia 
 
 
 
 
 
 
  
Salmacis 
 
 
 
 
 
 
  
Samlandaster 
 
 
 
 
 
 
  
Sanchezaster 
 
 
 
 
 
 
  
Sanchezella 
 
 
 
 
 
 
  
Santeelampas 
 
 
 
 
 
 
  
Sardocidaris 
 
 
 
 
 
 
  
Savainiaster 
 
 
 
 
 
 
  
Scagliaster 
 
 
 
 
 
 
  
Scaphechinus 
 
 
 
 
 
 
  
Scaptodiadema 
 
 
 
 
 
 
  
Schizaster 
 
 
 
 
 
 
  
Schizechinus 
 
 
 
 
 
 
  
Schizopneustes 
 
 
 
 
 
 
  
Scolechinus 
 
 
 
 
 
 
  
Scoliechinus 
 
 
 
 
 
 
  
Scutaster 
 
 
 
 
 
 
  
Scutella 
 
 
 
 
 
 
  
Scutellaster 
 
 
 
 
 
 
  
Scutellina 
 
 
 
 
 
 
  
Scutellinoides 
 
 
 
 
 
 
  
Scutulum 
 
 
 
 
 
 
  
Semipetalion 
 
 
 
 
 
 
  
Serpianotiaris 
 
 
 
 
 
 
  
Seunaster 
 
 
 
 
 
 
  
Silurocidaris 
 
 
 
 
 
 
  
Sinaecidaris 
 
 
 
 
 
 
  
Sismondia 
 
 
 
 
 
 
  
Somalechinus 
 
 
 
 
 
 
  
Somaliaster 
 
 
 
 
 
 
  
Spaniocyphus 
 
 
 
 
 
 
  
Spatagoides 
 
 
 
 
 
 
  
Spatangomorpha 
 
 
 
 
 
 
  
Spatangus 
 
 
 
 
 
 
  
Sphaerechinus 
 
 
 
 
 
 
  
Sphaerotiaris 
 
 
 
 
 
 
  
Stegaster 
 
 
 
 
 
 
  
Stegopygus 
 
 
 
 
 
 
  
Stenechinus 
 
 
 
 
 
 
  
Stenoaster 
 
 
 
 
 
 
  
Stereocidaris 
 
 
 
 
 
 
  
Sternotaxis 
 
 
 
 
 
 
  
Stigmatopygus 
 
 
 
 
 
 
  
Stirechinus 
 
 
 
 
 
 
  
Stomaporus 
 
 
 
 
 
 
  
Stomechinus 
 
 
 
 
 
 
  
Stomopneutes 
 
 
 
 
 
 
  
Strongylocentrotus 
 
 
 
 
 
 
  
Studeria 
 
 
 
 
 
 
  
Stylocidaris 
 
 
 
 
 
 
  
Taimanawa 
 
 
 
 
 
 
  
Taphraster 
 
 
 
 
 
 
  
Tarphypygus 
 
 
 
 
 
 
  
Tatechinus 
 
 
 
 
 
 
  
Temnechinus 
 
 
 
 
 
 
  
Temnocidaris 
 
 
 
 
 
 
  
Temnopleurus 
 
 
 
 
 
 
  
Temnotrema 
 
 
 
 
 
 
  
Tenuirachnius 
 
 
 
 
 
 
  
Termieria 
 
 
 
 
 
 
  
Tessieria 
 
 
 
 
 
 
  
Tetracidaris 
 
 
 
 
 
 
  
Tetragramma 
 
 
 
 
 
 
  
Tetraramania 
 
 
 
 
 
 
  
Thagastea 
 
 
 
 
 
 
  
Thierychinus 
 
 
 
 
 
 
  
Tholaster 
 
 
 
 
 
 
  
Thylechinus 
 
 
 
 
 
 
  
Tiarechinopsis 
 
 
 
 
 
 
  
Tiarechinus 
 
 
 
 
 
 
  
Tiaridia 
 
 
 
 
 
 
  
Tiaromma 
 
 
 
 
 
 
  
Titanaster 
 
 
 
 
 
 
  
Tithonia 
 
 
 
 
 
 
  
Togocyamus 
 
 
 
 
 
 
  
Tornquistellus 
 
 
 
 
 
 
  
Tournoueraster 
 
 
 
 
 
 
  
Toxaster 
 
 
 
 
 
 
  
Toxopatagus 
 
 
 
 
 
 
  
Toxopneustes 
 
 
 
 
 
 
  
Trachypatagus 
 
 
 
 
 
 
  
Tretocidaris 
 
 
 
 
 
 
  
Triadechinus 
 
 
 
 
 
 
  
Triadocidaris 
 
 
 
 
 
 
  
Triassicidaris 
 
 
 
 
 
 
  
Triplacidia 
 
 
 
 
 
 
  
Tripneustes 
 
 
 
 
 
 
  
Tripylus 
 
 
 
 
 
 
  
Trisalenia 
 
 
 
 
 
 
  
Trochalosoma 
 
 
 
 
 
 
  
Trochodiadema 
 
 
 
 
 
 
  
Trochoechinus 
 
 
 
 
 
 
  
Trochotiara 
 
 
 
 
 
 
  
Turanglaster 
 
 
 
 
 
 
  
Tylocidaris 
 
 
 
 
 
 
  
Unibothriocidaris 
 
 
 
 
 
 
  
Unifascia 
 
 
 
 
 
 
  
Valsalenia 
 
 
 
 
 
 
  
Vaquerosella 
 
 
 
 
 
 
  
Verbeekia 
 
 
 
 
 
 
  
Vernius 
 
 
 
 
 
 
  
Victoriaster 
 
 
 
 
 
 
  
Vinchuscanchaia 
 
 
 
 
 
 
  
Vologesia 
 
 
 
 
 
 
  
Vomeraster 
 
 
 
 
 
 
  
Washitaster 
 
 
 
 
 
 
  
Weisbordella 
 
 
 
 
 
 
  
Willungaster 
 
 
 
 
 
 
  
Winkleria 
 
 
 
 
 
 
  
Wrightia 
 
 
 
 
 
 
  
Wuarnia 
 
 
 
 
 
 
  
Wythella 
 
 
 
 
 
 
  
Xenechinus 
 
 
 
 
 
 
  
Xenocidaris 
 
 
 
 
 
 
  
Xysteria 
 
 
 
 
 
 
  
Zardinechinus 
 
 
 
 
 
 
  
Zenocentrotus 
 
 
 
 
 
 
  
Zeuglopleurus 
 
 
 
 
 
 
  
Zeugopleurus 
 
 
 
 
 
 
  
Zuffardia 
 
 
 
 
 
 
  
Zumoffenia 
 
 
 
 
 
 
  
 
 
  
See also 
References