Brachydelphis

Brachydelphis is a genus of pontoporiid known from the Late Miocene Pisco Formation of Peru and the Bahía Inglesa Formation of Chile.
Taxonomy.
Two species are recognized, "B. jahuayensis" and "B. mazeasi". "B. mazeasi" has a shortened rostrum that gives "Brachydelphis" its name, "B. jahuayensis" differs from the type species in having a longer snout and higher tooth count.
Biology.
"Brachydelphis mazeasi" was capable of suction-feeding judging from its short rostrum, but the longer rostrum of "B. jahauyensis" allowed it to capture small prey items.