Macrodelphinus

Taxobox
name = "Macrodelphinus"
fossil_range = Mid to Late Miocene

---

image_width = 250px
image_caption = "Macrodelphinus" and "Eurhinodelphis".
regnum = Animalia
phylum = Chordata
classis = Mammalia
ordo = Cetacea
subordo = Odontoceti
familia = Eurhinodelphinidae
genus = "Macrodelphinus"
species = "M. kelloggi"

"Macrodelphinus kelloggi" ("Kellog's Giant Dolphin") was an orca-sized relative of the cetacean "Eurhinodelphis". It lived off the coast of what is now California during the early Miocene. Because of its size, and inch-long teeth, it is believed to have been an apex predator. "Macrodelphinus" is known from a fragmentary skull from southern California.