Real ark players kill titanosaurs for these.

Knock out a bronto and rip its spine out

The easiest way to get this is to kill a diplo.

You could literally make a hibrid/ zombie Dino in ark. First the sauropod vertebrae, then the allosaurus brain, to protect the brain the wonderful Rex skull*, the giga heart, yuttranus or whatever you call it lungs, gasbags bladder, T. Rex arms, therozino claws, raw meat, hide, pelt, basilo blubber and to cover it up shell fragments.

*megolodon teeth for the skull

Used as a tribute to a boss fight.

If it's sauropod vertebra, then why doesn't the amargasaurus drop this?

Knock it out, rip it’s spine out, and then load it up with berries ( unless it’s a titanosaur ) and enjoy your sauropod that regrew it’s spine

my Lvl 128 Argy got killed by one of these Saurpods

Get this first :

Shotgun.

Enduro Stew or Battle Tartare.

Go to redwood and enjoy gun blazing diplo.