Echinoderms

Echinoderms are marine animals composed of a dermal skeleton with a characteristic pentaradial symmetry. Crinoids are one group of echinoderms and are listed on a previous web page. Other echinoderms include starfish, echinoids, cystoids, edrioasteroids, blastoids, paracrinoids and eocrinoids. Most of the echinoderems pictured here are from the Ordovician Bobcaygeon/Verulam Formations of Ontario. There are a few from other localities.


All photographs on these web pages are not to be copied or used for any purpose without my written permission.

Click on image to enlarge and see more details. On that page you can click on the image again for a full page view of the specimen.


Ordovician Echinoderms from Ontario
a2
Amecystites
Amecystites
Saltaster
Saltaster
Foerstediscus
Foerstediscus
Amecystites
Amecystites
Salteraster
Salteraster
Foerstediscus
Foerstediscus
Cryptogoleus
Edrioaster
Stenaster
Stenaster
Edriophus
Amygdalocystites
Cryptogoleus
Edrioaster
Stenaster
Stenaster
Edriophus
Amygdalocystites
Glyptocystites
Glyptocystites
Isorophusella
Cyclocystoides
Astrocystites
Tarquinites
Glyptocystites
Glyptocystites
Isorophusella
Cyclocystoides
Astrocystites
Tarquinites
Pleurocystites
Pleurocystites
Ateleocystites
Thresherodiscus
Astroporites
Belemnocystites
Pleurocystites
Pleurocystites
Ateleocystites
Thresherodiscus
Astroporites
Belemnocystites
Amecystites
Foerstediscus
Edriophus
Edrioaster
Isorophusella
Thresherodiscus
Amecystites
Foerstediscus
Edriophus
Edrioaster
Isorophusella
Thresherodiscus
Homocystites
Ateleocystites
Glyptocystites
Stenaster
Amygdalocystites
Isorophusella
Homocystites
Ateleocystites
Glyptocystites
Stenaster
Amygdalocystites
Isorophusella
Protaster
Cyclocystoides
Saltaster
Comarocystites
Edrioaster
Cryptogoleus
Protaster
Cyclocystoides
Salteraster
Comarocystites
Edrioaster
Cryptogoleus
Comarocystites
Schuchertia
more to come
more to come
more to come
more to come
Comarocystites
Schuchertia
more to come
more to come
more to come
more to come



Echinoderms from Other localities
Pentremites
Pentremites
Caryocystites
Gogia
Hyperoblastus
Carneyella
Pentremites
Pentremites
Caryocystites
Gogia
Hyperoblastus
Carneyella
Devonaster
Eugasterella
Eospondylus
Urasterella
Pentremites
Dexterites
Devonaster
Eugasterella
Eospondylus
Urasterella
Pentremites
Dexterites
Archaeocidaris
Orophocrinus
Placoblastus
Pyramiblastus
Castericystis
Gogia
Archaeocidaris
Orophocrinus
Placoblastus
Pyramiblastus
Castericystis
Gogia
Hypsiclavus
Caryocrinites
Pentremites
Troosticrinus
Archaeocidaris
Rhenocystis
Hypsiclavus
Caryocrinites
Pentremites
Troosticrinus
Archaeocidaris
Rhenocystis
Eleutherocrinus
Nucleocrinus
Hyperoblastus
Pentremites
Geocoma
Amber
Eleutherocrinus
Nucleocrinus
Hyperoblastus
Pentremites
Geocoma
Amber
Protaster
Protopaleaster
Protaster
Spinodiscus
Nucleocrinus
Deltablastus
Protaster
Protopaleaster
Protaster
Spinadiscus
Nucleocrinus
Deltablastus
Globoblastus
Metablastus
Heteroschisma
Troosticrinus
Caryocystites
Hyperoblastus
Globoblastus
Metablastus
Heteroschisma
Troosticrinus
Caryocystites
Hyperoblastus
Cheirocystis
Calocystites
Caryocystites
Devonaster
Adocetocystis
Cardiocystites
Cheirocystis
Calocystites
Caryocystites
Devonaster
Adocetocystis
Cardiocystites
Deltablastus
Loriolaster
Agelacrinites
Praeaplocoma
Krama
more to come
Deltablastus
Loriolaster
Agelacrinites
Praeaplocoma
Krama
more to come




Back to the top

Go to page 4