Best Late Cambrian
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Dikelocephalus is a large Late Cambrian trilobite genus from Wisconsin, USA, notable for its size and abundance in the St. Lawrence Formation.
An Upper Cambrian trilobite from Scandinavia and Wales that serves as the index fossil for the Olenus biozone, associated with low-oxygen seafloor environments.
Crepicephalus is a Late Cambrian trilobite genus from North America that serves as the namesake of the Crepicephalus Biozone used in Cambrian correlation.
Saukia is a Late Cambrian trilobite genus belonging to family Saukiidae, found in North America and Asia, and associated with the Sauk megasequence.
Elvinia is a Late Cambrian trilobite genus from North America used as an index fossil for the Elvinia Biozone in the upper Franconian Stage.
Ptychaspis is a Late Cambrian trilobite genus from North America whose name defines the Ptychaspid biomere, a key concept in Cambrian biostratigraphy.
Irvingella is a Late Cambrian trilobite genus valued for intercontinental biostratigraphic correlation, with occurrences in North America, Europe, Asia, and Australia.
Late Cambrian trilobite widely used as a biostratigraphic index fossil for upper Cambrian zones, particularly in Scandinavia and Baltic paleocontinental regions.
Dunderbergia is a Late Cambrian trilobite from the Great Basin of Nevada, USA, named after Dunderberg Peak in the Eureka District.
Late Cambrian trilobite closely related to Parabolina, known from Scandinavia and employed in upper Cambrian biostratigraphic correlation across the Baltic region.
Maryvillia is a Cambrian trilobite from eastern North America, named after Maryville, Tennessee, where early specimens were collected.
