Poll: Who wins?
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Brygmophyseter shigensis (pod of 5)
1 33.33%
Livyatan melvillei
2 66.67%
Total 3 vote(s) 100%
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Brygmophyseter shigensis (pod of 5) v Livyatan melvillei
Brygmophyseter shigensis (pod of 5)
Brygmophyseter, known as the biting sperm whale, is an extinct genus of toothed whale in the sperm whale family with one species, B. shigensis. When it was first described in 1994, the species was placed in the genus Scaldicetus based on tooth morphology, but this was later revised in 1995. In 2006, it was classified into the genus Naganocetus, which is considered to be a junior synonym. The only known specimen, a nearly complete skeleton, was dated to be around 14–15 million years old. Brygmophyseter is thought to have been 7 meters (23 ft) long, and it probably had 11 or 12 teeth in the upper and lower jaws. Brygmophyseter is part of a group of macroraptorial sperm whales (often shortened to "raptorial") which tended to be apex predators using their large teeth to catch struggling prey such as whales. It had a spermaceti organ which was probably used for biosonar like in the modern sperm whale. The whale has made an appearance on The History Channel's TV series Jurassic Fight Club.

[Image: 1e53729cc2d2b469f3d212fca70e9ccd.jpg]

Livyatan melvillei
Leviathan melvillei is an extinct species of physeteroid whale. Fossilised remains, comprising 75% of the animal's skull, and large fragments of both jaws and several teeth, were discovered in the Pisco-Ica desert in southern Peru in 2008, in Miocene rocks 12-13 million years old. The skull of Leviathan melvillei measured 3 metres long, its longest teeth were 36 cm long, and it is thought its overall length would have been in the region of 13.5-17.5 m. It was similar in size and appearance to the modern sperm whale. Unlike the sperm whale, however, which only has functional teeth in its lower jaw, Leviathan melvillei had teeth in both jaws, and is thought to have been an aggressive predator, possibly preying on baleen whales.

[Image: livyatan_melvillei_by_aaronjohngregory-d5vwgg9.jpg]
[Image: wildcat10-CougarHuntingDeer.jpg]
This is a close fight. I doubt the livyathan would flee the same way a baleen whale would given their predatory instinct, however, the biting sperm whales coming from all sides would make things difficult.
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[-] The following 1 user Likes OldGreenVulture's post:
  • Taipan
I'd say that a Brygmophyseter shigensis pod could take less impresssive whales than Livyatan regularly, but its always harder up against another impressive predator. They do have the numbers on their side, and are likely to be faster and more 'agile in water' overall.
[Image: wildcat10-CougarHuntingDeer.jpg]
[-] The following 2 users Like Taipan's post:
  • OldGreenVulture, onlyfaizy786
Brygmophyseter shigensis with pod of 5 not enough to control Livyatan was an apex predator.It probably also preyed upon sharks, seals, dolphins, and other large marine vertebrates. It was contemporaneous with and occupied the same region as the megalodon shark, which was likely also an apex predator, implying competition over their similar food source.
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Good point Taipan, heavy weight can't be used to cursh opponents in the sea although to a degree they still play a part in a fight.
[Image: bzvulture_max-br_1.png]

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