Isotelus is a genus of asaphid trilobites from the Middle and Late Ordovician Period, fairly common in the northeastern United States, northwest Manitoba...

of trilobite marker fossils. Trilobites are the state fossils of Ohio (Isotelus), Wisconsin (Calymene celebra) and Pennsylvania (Phacops rana). Representatives...

Buckeye (1953) Inanimate insignia Beverage Tomato juice (1965) Fossil Isotelus maximus, a trilobite (1985) Gemstone Ohio flint (1965) State route marker...

arthropods exceeded 60 cm (24 in) in length. A nearly complete specimen of Isotelus rex from Manitoba attained a length over 70 cm (28 in), and an Ogyginus...

Paleontology", page 62. Shrake (2005); "Isotelus and its History in Ohio", page 1. Shrake (2005); "Isotelus and its History in Ohio", page 2. Murray...

The trilobite Isotelus from Wisconsin...

A partially complete, forked, conterminant hypostome of the trilobite Isotelus (Ordovician of southern Ohio)....

collectors than the older ones. Ordovician trilobites from Illinois included Isotelus and Ceraurus. Ordovician trilobites left behind remains in northern and...

Shipworm-bored petrified wood Teredo petrified wood 1967 Ohio Ordovician Trilobite Isotelus maximus (Fossil invertebrate) 1985 Devonian Dunkleosteus Dunkleosteus terrelli...

Isotelus gigas, a large asaphid trilobite...

trilobites exceeded 60 cm (24 in) in length. A nearly complete specimen of Isotelus rex from Manitoba attained a length over 70 cm (28 in), and an Ogyginus...

mostly contains whole rolled Flexicalymene trilobites and fragments of Isotelus trilobites. An abundance of trilobites can be collected at the north end...

to the Sinnipee Group The imprints of the pygidium and lower thorax of Isotelus, the cephalon of Thaleops, a brachiopod and a bryozoan from the Sinnipee...

Acropyge Cheiropyge Carniphillipsia Kathwaia Paraphillipsia Pseudophillipsia First described Calymene Largest Isotelus Hungioides Smallest Acanthopluerella...

Hibbertia valcourensis Flexicalymene Flexicalymene senaria Isotelus Isotelus gigas Isotelus jacobus Pliomerops Pliomerops canadensis Vogdesia Vogdesia...

Acropyge Cheiropyge Carniphillipsia Kathwaia Paraphillipsia Pseudophillipsia First described Calymene Largest Isotelus Hungioides Smallest Acanthopluerella...

were tube-like structures containing fossil fragments of the trilobite Isotelus and of eurypterids, including M. ohioensis itself, interpreted as coprolites...

†Hyolithes †Idiognathoides †Idiognathoides sinuatus †Iocrinus †Isotelus †Isotelus gigas †Isotelus maximus †Kazakhstania †Krausella †Lepidodendron †Lepidodendron...

Acropyge Cheiropyge Carniphillipsia Kathwaia Paraphillipsia Pseudophillipsia First described Calymene Largest Isotelus Hungioides Smallest Acanthopluerella...

in Ohio native to Europe. State fossil or State invertebrate fossil The Isotelus maximus trilobite became the official state invertebrate fossil in 1985...

comparable form †Hyolithes †Icriodus †Iocrinus †Isodectes †Isonema †Isotelus †Isotelus maximus †Kindleoceras †Kionoceras †Kockelella †Lambeoceras †Leiosphaeridia...

Acropyge Cheiropyge Carniphillipsia Kathwaia Paraphillipsia Pseudophillipsia First described Calymene Largest Isotelus Hungioides Smallest Acanthopluerella...

Hunjiangites Hunnebergia Huochengia Iduia Isabelinia Isotella Isoteloides Isotelus Isyrakella Isyrakopeltis Kainisiliellina Kayseraspis Klabavia Kobayashia...

Acropyge Cheiropyge Carniphillipsia Kathwaia Paraphillipsia Pseudophillipsia First described Calymene Largest Isotelus Hungioides Smallest Acanthopluerella...

Encrinurus cybeleformis Erratencrinurus vigilans Flexicalymene senaria Isotelus gigas Ceraurinus marginatus Ceraurus pleurexanthemus cf. Achatella achates...

†Hyolithid †Indiana – tentative report †Iocrinus †Irvingella †Isodectes †Isotelus †Isotelus gigas †Kiaeropterus †Kingstonia †Kladognathus †Kootenia †Kutorgina...

†Isotelus †Isotelus angusticaudum †Isotelus bearsi †Isotelus canalis †Isotelus gigas †Isotelus gingas †Isotelus harrisi †Isotelus obtusum †Isotelus obtusus...

†Howella †Hyolithes †Hypseloconus †Illaenus †Inversoceras †Irvingella †Isotelus †Kionoceras †Krausella †Leonaspis †Leurocycloceras †Lingula †Lingulella...

species †Heliomeroides †Holia †Hyolithes †Ilyodes †Isodectes †Isotelus †Isotelus gigas †Isotelus maximus †Kionoceras †Latzelia – type locality for genus †Latzelia...

Acropyge Cheiropyge Carniphillipsia Kathwaia Paraphillipsia Pseudophillipsia First described Calymene Largest Isotelus Hungioides Smallest Acanthopluerella...