Three 3D models of trilobite specimens.

Virtual Collection: Trilobita

This virtual collection was last curated by Jonathan Hendricks on April 24, 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.

Order Phacopida


Family Calymenidae

Fossil specimen of the trilobite Calymene celebra from the Silurian Niagara Series of Milwaukee, Wisconsin (PRI 42100). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Specimen is approximately 4 cm in length.


Fossil trilobite Flexicalymene meeki from the Ordovician Ft. Ancient Formation of Brown County, Ohio (PRI 41460). Specimen is on display at the Museum of the Earth, Ithaca, New York. Length of specimen is approximately 3.5 cm.


An enrolled fossil specimen of the trilobite Flexicalymene meeki from the Ordovician of Cincinnati, Ohio (PRI 70754). Specimen is from the collections of the Paleontogical Research Institution, Ithaca, New York. Maximum diameter of specimen is approximately 2.5 cm.


Family Dalmanitidae

Fossil specimen of the trilobite Dalmanites sp. from the Silurian of Niagara County, New York (PRI 76797). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Length of specimen (not including surrounding rock) is approximately 5 cm.


Family Homalonotidae

Fossil specimen of the trilobite Dipleura dekayi from the Middle Devonian of Hamilton, New York (PRI 68155). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Specimen is approximately 15 cm in length.


Family Phacopidae

Fossil specimen of the trilobite Eldredgeops crassituberculata from the Devonian Silica Formation of Sylvania, Ohio (PRI 49388). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Maximum diameter of specimen is approximately 2.5 cm.


Fossil trilobite specimen of Eldredgeops crassituberculata from the Middle Devonian Silica Formation of Ohio (PRI 49811). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Longest dimension of specimen is approximately 5 cm.


Fossil specimen of the trilobite Eldredgeops rana from the Devonian Ludlowville Formation of Genesee County, New York (PRI 49811). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Trilobite is approximately 3 cm in length.


Fossil specimen of the trilobite Eldredgeops rana (=”Phacops rana”) from the Devonian Ludlowville Formation of Genesee County, New York (PRI 70712). From the collections of the Paleontological Research Institution, Ithaca, New York. Length of trilobite (not including surrounding rock) is approximately 3 cm.


Fossil trilobite Eldredgeops rana from the Devonian of New York. Specimen shows unusual pyritized tubes; it is unclear if these are directly associated with the trilobite, or not. Specimen is from the Paleontological Research Institution, Ithaca, New York. Model by Emily Hauf.

Order Agnostida


Fossil specimen of an agnostid trilobite, likely from the Cambrian of Utah. Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Maximum dimension of rock is approximately 7 cm; trilobite is 9 mm in length.

Order Ptychopariida


Family Alokistocaridae

Fossil specimens of the trilobite Elrathia kingii from the Cambrian Wheeler Formation of Millard County, Utah (PRI 76837). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Length of larger specimen is about 4 cm; length of smaller specimen is about 3 cm.


Family Conocoryphidae

Fossil specimen of the trilobite Conocoryphe sulzeri from the Cambrian Jince Formation of the Czech Republic (PRI 76771). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Specimen (not including surrounding rock matrix) is approximately 5 cm in length.


Family Olenidae

Fossil specimen of the trilobite Angelina sedgwickii from the Ordovician of Wales, England (PRI 76865). Note that this fossil has been deformed by tectonic forces. Specimen is part of the research collections of the Paleontological Research Institution, Ithaca, New York. Length of trilobite is approximately 5.5 cm.


Fossil specimen of the trilobite Triarthrus eatoni from the Ordovician Utica Shale of Herkimer County, New York (PRI 76772). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Length of specimen (not including surrounding rock matrix) is approximately 4 cm.

Order Redlichiida


Family Paradoxididae

Fossil specimen of the trilobite Paradoxides spinosus from the Cambrian of Spain (PRI 76751). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Length of specimen (not including surrounding rock) is approximately 7.5 cm. Specimen has been naturally deformed by tectonic forces. 

Family Wanneriidae

Fossil specimen of the trilobite Wanneria walcottana from the Cambrian Kinzers Formation of Lancaster County, Pennsylvania (PRI 76846). Specimen is from the research collections of the Paleontological Research Institution, Ithaca, New York. Trilobite is approximately 12.5 cm in length.

Order Asaphida


Family Asaphidae

Fossil specimen of the trilobite Asaphus intermedius from the Ordovician of St. Petersburg, Russia (PRI 76770). Specimen is from the collections of the Paleontological Research Institution, Ithaca, New York. Length of specimen (not including surrounding rock matrix) is approximately 6 cm. 


Fossil specimens of the trilobite Homotelus bromidensis from the Ordovician Bromide Formation of Carter County, Oklahoma (PRI 45505). Specimen from the collections of the Paleontological Research Institution, Ithaca, New York. Longest dimension of specimen is approximately 14 cm in length.


Fossil specimen of the trilobite Isotelus gigas from the Ordovician of Oneida County, New York (PRI 76285). Specimen is part of the collection of the Paleontological Research Institution, Ithaca, New York. Specimen (not including surrounding rock) is approximately 3 cm in length.


Trilobite fossil Isotelus sp. from the Ordovician period. Specimen is on display at the Museum of the Earth, Ithaca, New York. Length of specimen is approximately 6.5 cm.