Robergia vs Asaphus
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Robergia
Robergia is an extinct genus of Ordovician trilobites in the family Remopleurididae, within the order Asaphida. It is recorded from Baltoscandian and North American strata, and its taxonomic concept has been revised as some formerly assigned species were separated into other genera. Re-examination of the type species shows a narrow anterior cranidial border, a feature used to distinguish Robergia...
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Asaphus
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 can reach several centimeters in height. These elongated eyes are thought to have been an adaptation...
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