Top Results for Asaphida

Cyclopyge is a genus of trilobites from the Ordovician Period, recognized by exceptionally large compound eyes occupying much of the sides of the cephalon. It belonged to a group commonly interpreted as pelagic or deep-water trilobites rather than animals confined to the seafloor. The enlarged visua...

Carolinites is a genus of Ordovician trilobite characterized by very large compound eyes that provided a broad field of vision. Its remains occur in geographically widespread marine deposits, a distribution commonly interpreted as evidence that it lived in the open water column rather than remaining...

Neoasaphus is a type of trilobite fossil belonging to the Asaphida order and Asaphidae family. Primarily found in Ordovician deposits of Russia, particularly within the Baltic region, it’s notable for exceptionally well-preserved eyes. These eyes, often encased in three-dimensional calcite, reveal e...

Isotelus rex is a remarkably large species of trilobite belonging to the Asaphida order. Recovered from Ordovician-age rocks in Manitoba, Canada, it represents the largest complete trilobite fossil ever discovered reaching approximately 72 centimeters in length. This specimen provides crucial insigh...

Neoasaphus kowalewskii is a fossil trilobite discovered in Russia’s Ordovician deposits. This species is notable for its exceptionally long stalks supporting its eyes, a unique feature among trilobites. Its stalked-eyes provide valuable insight into the sensory capabilities of asaphid arthropods dur...

Asaphus is a genus of trilobite from the Ordovician period, belonging to the family Asaphidae, with fossils primarily found in the Baltic region including Russia, Estonia, and Sweden. Several species within the genus developed prominent stalked eyes, with Asaphus kowalewskii bearing eyestalks that c...

Isotelus is an extinct genus of large asaphid trilobite that lived during the Ordovician period. It possessed a smooth, relatively featureless exoskeleton and lacked the prominent spines seen in other trilobite genera. The species Isotelus rex, discovered in Manitoba, Canada, is recognized as one of...

Bumastoides is an extinct genus of illaenid trilobite that existed during the Ordovician and Silurian periods. It is characterized by its smooth, highly convex exoskeleton that displays greatly reduced surface definition between its body segments. The genus features a large, rounded head shield (cep...

Raphiophorus is an extinct genus of trilobites that existed during the Ordovician and Silurian geological periods. As a member of the family Raphiophoridae within the order Asaphida, this prehistoric arthropod possessed a highly streamlined body structure adapted to its marine environment. Its most...

Pseudoasaphus is an extinct genus of asaphid trilobite that inhabited the marine environments of Baltica during the Ordovician period. Closely related to the genus Neoasaphus, these trilobites are predominantly found in the fossil records of Baltic Russia. They are particularly notable for their pro...

Ogygopsis is an extinct genus of trilobite from the Middle Cambrian period, belonging to the order Corynexochida. Specimens are predominantly recovered from the Burgess Shale formation in Yoho National Park, British Columbia, Canada. It is recognized as one of the most common and frequently encounte...

Early Ordovician trilobite known from Baltic and Gondwanan deposits, representing an early post-Cambrian radiation within its respective trilobite lineage.

Ogygiocaris is an extinct genus of large asaphid trilobites from the Ordovician Period. Fossils are known from Wales and Scandinavia, and Welsh specimens can reach roughly 12 centimetres in length. Like other trilobites, it had a mineralized exoskeleton divided into a cephalon, a segmented thorax, a...

Ordovician asaphid trilobite from Baltica, known from Scandinavian and Baltic limestones and characterized by a smooth, broadly ovoid dorsal outline.

Ogygiocarella is an Ordovician trilobite genus known particularly from Wales. It belongs to the asaphid lineage and is historically notable because Edward Lhwyd illustrated a specimen in 1698, placing it among the earliest trilobites to appear in published scientific illustration. The genus is of in...

Pilekia is an extinct trilobite genus in the family Pilekiidae, within the order Phacopida and suborder Cheirurina. It belongs to a group of Paleozoic marine arthropods whose fossils preserve a segmented body divided into a cephalon, thorax, and pygidium. Pilekia is associated with Ordovician trilob...

Ogygites is an extinct genus of Ordovician trilobites often placed within Ogygiidae, a group in the order Asaphida. It is known from European Ordovician rocks, including southern France and Wales, and the type species is Ogygites desmaresti. The genus belongs to a group of broadly flattened asaphid...

Bumastus is an extinct genus of Silurian trilobites in the family Illaenidae. Its inflated, smooth exoskeleton has weakly expressed segmentation, producing a rounded profile that distinguishes it from more strongly furrowed trilobites. Species are known from marine rocks in North America and Europe,...

Illaenus is a genus of trilobites that lived during the Ordovician and Silurian periods. It is characterized by a broad, relatively smooth cephalon and prominent eyes, features associated with the family Illaenidae. Fossils of Illaenus are especially well represented in the Baltic region, making the...

Symphysurus is an Ordovician genus of trilobites in the family Symphysurinidae. Its fossils are known from regions including Scandinavia and China, giving the genus a broad distribution across parts of the Northern Hemisphere. Symphysurus is recognized as a relatively smooth-bodied member of the asa...

Ectillaenus is a genus of illaenid trilobites known from the Ordovician and Silurian fossil record of Europe. It was described by John William Salter in 1866 and is associated with the smooth, rounded body form characteristic of many illaenids. The genus is recognized by features including a broad c...

Nileus is a genus of trilobites that lived during the Ordovician Period. It belongs to the family Nilaeidae and is recognized by its relatively smooth, broad exoskeleton, rounded cephalon, and large eyes. Fossils assigned to Nileus are especially associated with Ordovician marine rocks in Scandinavi...

Asaphellus is an extinct genus of asaphid trilobites from the Ordovician Period. Its fossils are widely reported from Gondwana and regions that were once situated near Gondwana, including parts of North Africa. Because the genus occurs in several geographically separated marine basins, its distribut...

Mucronaspis is an extinct genus of dalmanitid trilobites from the Late Ordovician. It is associated with uppermost Ordovician marine strata in parts of Europe and North Africa, and its remains are relevant to studies of the faunal changes that accompanied the end-Ordovician extinction. The genus is...

Nobiliasaphus is a genus of Ordovician asaphid trilobites recorded from the Baltic region and South America. Its most distinctive feature is the development of large compound eyes, which occupied a prominent position on the cephalon and provided a broad field of vision. The genus belongs to Asaphida...

Ordovician trilobite from the Anglo-Welsh basin used as a biostratigraphic index fossil for correlating Lower Ordovician strata across Europe.

Ordovician trilobite genus known from European strata, a member of the diverse shallow-marine benthos of the period, with relatively limited described taxonomic material.

Ananaspis is an extinct genus of phacopid trilobites in the family Phacopidae, established by Campbell in 1967. It is known from Silurian marine strata, including the Henryhouse Formation of Oklahoma, Upper Silurian deposits in the East Baltic, and Silurian rocks of central Victoria in Australia. Th...

Apatokephalus is an extinct genus of remopleuridid trilobites within the order Asaphida. It is chiefly known from Tremadocian, or Early Ordovician, rocks, although Cambrian Stage 10 records have also been discussed. The genus is distinguished by an urceolate glabella flanked by long arcuate palpebra...