Long-beaked common dolphin to 60 small, sharp, interlocking teeth on each side of each jaw. They have more teeth than any other delphinids. The long-beaked common dolphin is a member of common dolphin genus, "Delphinus" within the dolphin family, Delphinidae in the cetaceans order. Until the mid-1990s, the different forms within "Delphinus" were not recognized as separate species, but were all considered members of the species "D. delphis". In 1994, Heyning and Perrin did research on these species and then Kingston and Rosel confirmed there were two separate species. Currently, the two recognized species of "Delphinus" are the short-beaked common dolphin ("D. delphis")
Delphinus Pegasus the flying horse. Delphinus lacks stars above fourth (apparent) magnitude; its brightest star is of magnitude 3.8. The main asterism in Delphinus is Job's Coffin, nearly a 45°-apex lozenge diamond of the four brightest stars: Alpha, Beta, Gamma, and Delta Delphini. Delphinus is in a rich Milky Way star field. Alpha and Beta Delphini have 19th century names Sualocin and Rotanev, read backwards: Nicolaus Venator, the Latinized name of a Palermo Observatory director, Niccolò Cacciatore (d. 1841). Alpha Delphini is a blue-white hued main sequence star of magnitude 3.8, 241 light-years from Earth. Beta Delphini, called Rotanev. The gap