Buffalopterus

{{Short description|Genus of arthropods (fossil)}}

{{Automatic taxobox

| fossil_range = {{fossil range|Silurian}}

| image = The Eurypterida of New York plate 23.jpg

| image_caption = Fossils

| display_parents = 2

| taxon = Buffalopterus

| authority = Kjellesvig-Waering & Heubusch, 1962

| type_species = †Buffalopterus pustulosus

| type_species_authority = Kjellesvig-Waering & Heubusch, 1962

| synonyms =

• Eurypterus giganteus Pohlman, 1882
• Pterygotus globicaudatus Pohlman, 1882

}}

Buffalopterus is a prehistoric eurypterid from the Silurian-aged Bertie Formation of New York and Ontario. The genus contains one species, B. pustulosus. It is closely related to Strobilopterus, but differs primarily by having a bizarre, globular telson (which is otherwise sword-like or spine-like in other eurypterids), and in size, being estimated to be around {{convert|1|m|ft}},Some Eurypterida from the Ordovician and Silurian of New York Erik N. Kjellesvig-Waering and Carol A. Heubusch although later study show size estimation of {{convert|30|cm|in}}.{{cite journal |last1=Lamsdell |first1=James C. |last2=Braddy |first2=Simon J. |year=2009 |title=Cope's rule and Romer's theory: patterns of diversity and gigantism in eurypterids and Palaeozoic vertebrates |url=https://www.researchgate.net/publication/38010972 |journal=Biology Letters |volume=6 |issue=2 |pages=265–269 |doi=10.1098/rsbl.2009.0700 |issn=1744-9561 |pmc=2865068 |pmid=19828493 |id=[http://royalsocietypublishing.org/doi/suppl/10.1098/rsbl.2009.0700 Supplemental material]}}