This virtual collection was last curated by Jaleigh Pier on August 20, 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
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 Camarodonta
Modern specimen of the purple sea urchin Strongylocentrotus purpuratus from Cornwall, England (PRI 78783). Specimen is from the research collections of the Paleontological Research Institution, Ithaca, New York. Maximum diameter of specimen is approximately 12 cm.
Modern specimen of the slate pencil sea urchin Heterocentrotus mamillatus. Specimen is from the research collection of the Paleontological Research Institution, Ithaca, New York. Maximum diameter of specimen is approximately 15 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.
Fossil sea urchin Balanocidaris marginata from the Jurassic of France (PRI 78787). Specimen is from the research collections of the Paleontological Research Institution, Ithaca, New York. Maximum diameter of specimen is approximately 7 cm.
Fossil regular sea urchin (echinoid) Stereocidaris hudspethensis from the Cretaceous Washita Group of Hudspeth County, Texas (PRI 50632). Specimen is on display at the Museum of the Earth, Ithaca, New York. Maximum diameter of specimen is approximately 9 cm.
Order Echinocystitoida
Fossil specimens of the echinoid Archaeocidaris immanis from the Pennsylvanian Winchell Limestone of Brown County, Texas (PRI 45520). Specimen is on display at the Museum of the Earth, Ithaca, New York. Longest dimension of rock is approximately 21 cm.
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.
Fossil sea urchin Phymosoma texanum from the Cretaceous Walnut Formation of Bell County, Texas (PRI 78781). Specimen is on display at the Museum of the Earth, Ithaca, New York. Maximum diameter of specimen is approximately 4 cm.
Irregular echinoids
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.
Fossil sand dollars belonging to the species Parascutella paulensis from the Miocene of Bordeaux, France (PRI 78782). Specimen is from the research collection of the Paleontological Research Institution, Ithaca, New York. Length of rock is approximately 20 cm.
Modern specimen of the sea urchin Clypeaster reticulatus from the Indo-Pacific Ocean (T-1818). Specimen is from the teaching collection of the Paleontogical Research Institution, Ithaca, New York. Length of specimen is approximately 13 cm.
Fossil sea urchin Clypeaster cortesei from the Miocene of Italy (PRI 78786). Specimen is from the research collections of the Paleontological Research Institution, Ithaca, New York. Maximum diameter of specimen is approximately 12.5 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 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.
Fossil specimen of the sea urchin Schizaster sp. from the Eocene La Meseta Formation of Seymour Island, Antarctica (PRI 58941). Specimen is from the research collections of the Paleontological Research Institution, Ithaca, New York. Length of specimen is approximately 5.5 cm.
Unidentified
Conglomerate rock composted mostly of the tests of sand dollars (species unidentified); specimen is from the Neogene of Santa Cruz County, California (PRI 81257). Specimen is from the research collections of the Paleontological Research Institution, Ithaca, New York. Length of rock is approximately 13.5 cm. in length.