Size comparisons

[GuateGojira]

(11-02-2022, 11:59 PM)AndresVida Wrote: Sadly it's time to update this my friend. 
Very big downsize 

Updated Livyatan with up-to-date proportions, largest specimen comes out at ~12 and a half meters long

*This image is copyright of its original author

*This image is copyright of its original author


Livyatan is restored based on it's close relatives which are visible in the img ,the 17 metre estimate no longer holds up because the base for it ( Zygophyseter ) had the wrong HL TL ratio in the paper ( The mount just measures like 5 metres rather than 7 metres taken in the paper) based on more rigourous Reconstructions it's <15 metres

*This image is copyright of its original author

*This image is copyright of its original author


Livyatan Melvillei and Megalodon ( The blue one is an incredibly well preserved Megalodon skeleton which is nearly 16 metres long ,the one behind is the 20 metre estimates based on 2021 papers)

No problem, I can make the update, but I will like to know the source (document or person) of the new corrected size of Zygophyseter. Where are pubished the measurements or who made the calculations. 

Also, Brygmophyseter is also a close relative from Livyatan and using its body size it was got an estimated of over 15 meters:

*This image is copyright of its original author

I also made an estimation from my own and I got about the same body length. So the body size of Livyatan is far for been fully resolved because we are using "close" relatives for its reconstruction, is like using cougars (Brygmophyseter and Zygophyseter) or Smilodon (modern sperm whale, very specialized predator) to re-build a tiger! Also, we need to remember that we only know ONE specimen, and we don't know if that was a male, or a female, of it was a young adult or an old adult, we don't even know if that was its maximum size or just an average.

So, what we can say is that based on its close relatives known its body length could be between 12 - 16 meters. In body mass, that is another story and I will not touch that yet. However, I will like to know the sources of the new body size estimated for Zygophyseter, just to make sure. Reply