Korrosioidens

Korrosioidens is a genus of extinct marine invertebrates known from a limited fossil record recovered from iron-rich sedimentary deposits on the northern margin of the ancient continent Gondwana. The age and precise affinities of the material are uncertain, and the genus remains only sparsely described in the paleontological literature.

Anatomy and ecology interpretations drawn from the available fossils depict a dorsoventrally flattened body with a broad, shield-like carapace and a segmented trunk. Limb impressions are fragmentary, but the preserved features point to a benthic, slow-moving lifestyle on the seafloor. The armor and body plan suggest a degree of protection from predators, with feeding likely based on detritus and small invertebrates encountered on the substrate.

Taxonomic status and discovery notes indicate Korrosioidens was named in the late 20th century by researchers who proposed it as part of a distinctive, though poorly resolved, lineage within early marine invertebrates. The etymology combines roots alluding to the rust-colored preservation of the armor and to dentate elements observed along the carapace edges. Because the fossil material is limited, the genus remains a subject of ongoing study, with future discoveries needed to clarify its systematic position and its role in the evolutionary history of its broader group.