Three 3D models of representative Echinoidea.

Virtual Collection: Class Echinoidea

This virtual collection was last curated by Jonathan Hendricks on May 2, 2019. Each model is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. Unless otherwise indicated, each model was created by Emily Hauf using specimens at the Paleontological Research Institution, Ithaca, New York.

Regular echinoids


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Modern specimen of a regular echinoid from Camarones, Equador (PRI 76790). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Maximum diameter of specimen is approximately 5 cm.

Order Cidaroida


Modern specien of the echinoid Eucidaris tribuloides from near Key West, Florida (PRI 13410). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Specimen is approximately 7.5 cm in diameter.

Order Phymosomatoida


Fossil specimen of Phymosoma texanum from the Cretaceous Fredericksburg Group of Texas (PRI 76726). Specimen from the collections of the Paleontological Research Institution, Ithaca, New York. Specimen is approximately 4.5 cm in diameter.

Irregular echinoids

Order Spatangoida


Fossil specimen of the echinoid Echinocardium orthonotum from the Miocene of Maryland (PRI 503). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Length of specimen is approximately 5 cm. 


Fossil specimen of the echinoid Eupatagus antillarum from the Eocene Ocala Limestone of Levy County, Florida (PRI 76727). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Length of specimen is approximately 7 cm.

Order Echinoneoida


Fossil specimen of the echinoid (sea urchin) Conulus albogalerus from the Cretaceous of the Isle of Wight, England (PRI 44594). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Height of specimen is approximately 4 cm.

Order Holasteroida


Fossil specimen of the echinoid Hemipneustes striatoradiatus from the Cretaceous of Maastricht, Holland (Netherlands) (PRI 42520). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Length of specimen is approximately 10 cm.

Order Clypeasteroida


Fossil sand dollar Encope tamiamiensis from the upper Pliocene Tamiami Fm. of Charlotte County, Florida (PRI 44095). From the collections of the Paleontological Research Institution. Maximum length of specimen approximately 7 cm.