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Named By: Bianucci & Landini in 2006
Time Period: Tortonian
Location: Italy
Size: Approximately 7 meters long
Diet: Carnivore
Fossil(s): Almost complete skeleton
Classification: | Chordata | Mammalia | Cetacea | Physeteroidea |

Zygophyseter varolai is an extinct cetacean, similar to the sperm whale. The common name of killer sperm whale refers both to its relation to modern day sperm whales, and to its similarity in size to and its "probable similar feeding adaptation to the extant delphinid killer whale (Orcinus orca)".

Read more about Zygophyseter at Wikipedia
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