The Fossil Record Add-on 1.21+

Now you can breed creatures from the distant past in your world. The mod The Fossil Record is perfect for players who want to create Dinosaur zoos in their world. You search for fossils, extract DNA, and create dinosaur eggs, which behave differently depending on the species. Some are aggressive, others are large and slow, but all of them add variety to Minecraft survival.

How to create a Dinosaur?

First, you need to find Fossils, which appear on Stones

Then you'll need a Spectrometer

Use Crushed Fossil on the Spectrometer

You’ll get Dinosaur DNA

Combine the DNA in a Crafting Table with a regular Chicken Egg

Now you'll have a baby dinosaur, but it can't be tamed

If it's a predator, you need to feed it Raw Meat or Animals