Best Spiny Pygidium
Ceraurus is an extinct genus of cheirurid trilobites that thrived in shallow marine environments during the Ordovician period. These arthropods are commonly found in Paleozoic limestone deposits across North America and parts of Europe. The genus is distinguished by its heavily armored exoskeleton,...
Cheirurus is an extinct genus of trilobite belonging to the family Cheiruridae, with a fossil record spanning the Ordovician through the Devonian periods. These marine arthropods are characterized by their distinctive, multi-lobed pygidium, or tail shield, which extends into prominent spines. Fossil...
Ordovician trilobite of the family Pliomeridae, distributed across European and Baltic strata, notable for its prominent eyes, defined pleural lobes, and wide geographic range.
