Assertion: modern sperm whale | /r/HasProperty | physeter macrocephalus
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text: Livyatan's total length has been estimated to be about 13.5–17.5 m (44–57 ft), similar to the modern sperm whale (Physeter macrocephalus), making it one of the largest predators to have ever existed.
text: In the modern sperm whale (Physeter macrocephalus), the spermaceti organ is far larger in proportion to the animal’s body than what would be explained by simple allometry, and the evolution of the organ has caused changes in basal skull morphology, which may implicate tradeoffs were made that compromised the functionality of other nearby features.