Top Results for Early Cambrian

Serrodiscus is an extinct genus of small trilobites from the Early Cambrian, known from fossil material found in North America and Europe. It belongs to an early group of these marine arthropods and is recognized through features of its segmented dorsal exoskeleton, including a relatively small body...

Daguinaspis is a genus of early trilobites known from Lower Cambrian rocks in Morocco. It belongs to an archaic group of redlichiid trilobites and is important to paleontologists studying the earliest well-documented diversification of animals with mineralized skeletons. Its fossils contribute evide...

Early Cambrian trilobite known from Gondwanan localities including Spain and Morocco, characterized by its distinctly ornamented dorsal exoskeleton.

Olenellus is an extinct genus of early trilobite that lived during the Early Cambrian period. Fossils of this primitive arthropod are primarily located in North America and Greenland, where they define the Olenellus biozone of the lower Cambrian. Olenellus lacks facial sutures and features a large,...

Redlichia is an Early Cambrian trilobite genus recorded from Australia and Asia and assigned to the redlichiid trilobites. It is used as an index fossil for lower Cambrian deposits, so its occurrence can help correlate rocks from this part of the geological record. The genus is also associated with...

Eoredlichia is an extinct genus of redlichiid trilobites from the Early Cambrian. It is especially well documented in the Chengjiang biota of Yunnan, China, where articulated specimens preserve appendages, including antennae and biramous limbs; the genus is also reported from other regions, includin...

Fallotaspis is an extinct genus of redlichiid trilobites from the Early Cambrian. Fossils are known from Morocco and North America, and the genus is part of the early record of trilobite diversification soon after trilobites appear in Cambrian rocks. Its redlichiid anatomy, including a segmented tho...

Holmia is a genus of olenellid trilobites from the early Cambrian Period. It is particularly associated with Scandinavia and nearby parts of the Baltic region. The genus gives its name to the Holmia Biozone, a biostratigraphic interval used to correlate lower Cambrian rocks in parts of northern Euro...

Protolenus is a genus of redlichiid trilobites from the early Cambrian Period. Fossils are known from Morocco and the Iberian Peninsula, regions that formed part of the peri-Gondwanan paleogeographic realm. The genus is related to early paradoxidid-grade trilobites and occurs in strata used for regi...

Callavia is a genus of olenellid trilobites from the early Cambrian Period. It is especially associated with Newfoundland, Canada, and other parts of Laurentia. The genus gives its name to the Callavia Biozone, a biostratigraphic interval used in correlating lower Cambrian rocks in the region. Calla...

Bathynotus is a genus of early trilobites from the Cambrian Period. Fossils are known from South China and from rocks assigned to very early Cambrian intervals. The genus is commonly discussed in studies of the early record of trilobites because its fossils occur near the beginning of the group’s kn...

Bristolia is an extinct genus of olenellid trilobites from the Early Cambrian of western North America. It is particularly associated with fossil-bearing strata in Nevada and California and is recognized by the long genal spines extending from the sides of its cephalon. The genus is used in work on...

Nephrolenellus is an extinct genus of olenellid trilobites from the Early Cambrian of western North America. Its body plan includes an elongated axial lobe and a relatively small pygidium, features associated with the early olenellid trilobite form. Fossils of Nephrolenellus contribute to studies of...

Wanneria is a genus of olenellid trilobites from the Early Cambrian period. Its fossils occur in North America and are associated with the Laurentian continent, an ancient landmass that included much of present-day North America. As an early trilobite, Wanneria helps document the diversification of...

Mesonacis is a genus of Early Cambrian olenellid trilobites known from North America and Greenland. It belongs to the order Redlichiida and the family Olenellidae, a group associated with some of the earliest widespread trilobite faunas. Mesonacis is characterized in descriptions by the structure of...

Kjerulfia is a genus of Early Cambrian trilobites known from lower Cambrian deposits in Norway and Sweden. It is associated with the olenellid trilobites, an early branch of trilobite diversity that appeared during the initial expansion of the group. Fossils assigned to Kjerulfia are useful for stud...

Paedeumias is an extinct genus of olenellid trilobites from the Early Cambrian, classified in the order Redlichiida and family Olenellidae. Its fossils are known from Laurentian North America, including Nevada, California, and Pennsylvania, and named species include Paedeumias nevadensis and Paedeum...

Bergeroniellus is an extinct early Cambrian trilobite genus known especially from the Siberian Platform. The genus is associated with regional Botomian biozones, including the Bergeroniellus gurarii Zone, and fossils occur in the Sinsk Formation near the Lena River. These named intervals are used to...

Pagetiellus is a small extinct trilobite genus associated with the agnostid family Pagetiidae in older Cambrian classifications. It is linked with early Cambrian faunas of Siberia and has also appeared in discussions of Laurentian material, making the name relevant to comparisons among regional bios...