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...

The trilobite Isotelus from Wisconsin...

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

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

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...

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

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

Shipworm-bored petrified wood Teredo petrified wood 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...

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

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

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

†Icriodus †Illaenus †Iniopteryx †Iniopteryx rushlaui †Iocrinus †Isotelus †Isotelus gigas †Isotelus maximus †Kindleoceras †Kingstonia †Kionoceras †Kokomopterus...

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

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

of trilobite Brongniartia isotelea, a junior synonym of the trilobite Isotelus gigas Brongniartia trilobitoides, a former name of the Antarctic crustacean...

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

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...

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

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

large 5 in (13 cm) by 3.5 in (8.9 cm) specimen) belonged to the genus Isotelus because of the size, shape, and almost featureless cephalon. But he noted...

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

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

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

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...

†Hexagonaria †Hexagonaria pericarinata †Hindia †Holopea †Icriodus †Isotelus †Isotelus gigas †Lepidodendron †Lepidodendron aculeatum †Lepidodendron Brittsii...

†Helcionopsis striata †Hibbertia †Hindia †Holopea †Hyolithes †Illaenus †Isotelus †Kockelella †Krausella †Lingulella †Lonchodomas †Marsupiocrinus †Meristella...