Calymene niagarensis

{{Short description|Species of trilobite}}

{{Speciesbox

| fossil_range = Middle Silurian[https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=189541 Paleobiology Database]

| image = Calymenidae - Calymene niagarensis.JPG

| image_caption = Fossils of Calymene niagarensis from Ohio, United States, on display at Galerie de paléontologie et d'anatomie comparée in Paris

| taxon = Calymene niagarensis

| authority = Hall, 1843

}}

Calymene niagarensis is a species of trilobite belonging to the genus Calymene. These nektobenthic carnivores lived in the Middle Silurian, from 436.0 to 426.2 Ma.