Dynastids mature quickly, reaching adolescence by the time they are 5 and becoming mature in their mid to early teens. They can live to be up to 60 years old

Dynastids are shorter but heavier than humans due to their thick exoskeletons. They can reach heights of about 4 feet and weigh roughly 200-350 pounds. You are considered Medium

Your base walking speed is 25 feet.
You can also burrow through loose earth at the same speed, but cannot travel through stone.

Dynastids are capable of intelligent thought and speech. Most speak their native tongue as well as the common world language.

You have a pair of chitinous wings under your shell which you can use to fly short distances at a time.  You can use your wings to fly 20 feet.  This trait can be used a number of rounds equal to your CON modifier per long rest.  

Due to your shell and the shape of your body, you are ill-suited to wearing armor. Your shell provides ample protection, however; it gives you a base AC of 17 (your Dexterity modifier doesn’t affect this number). You gain no benefit from wearing armor, but if you are using a shield, you can apply the shield’s bonus as normal.

You have a shorter pair of arms in the center of your chest. Your smaller arms have a reach of 5 feet, and you can use them to lift a number of pounds equal to five times your Strength score. You can use these arms to do the following simple tasks: open or close a door or a container; grapple someone; or make an unarmed strike with your claws. Your claws as act as natural melee weapons, which you can use to make unarmed strikes. If you hit with them, you deal slashing damage equal to 1d4 + your Strength modifier, instead of the bludgeoning damage normal for an unarmed strike. Your secondary arms can’t wield weapons or shields or do anything that requires manual precision, such as using tools or magic items or performing the somatic components of a spell. Your GM might allow other simple tasks to be added to that list of options.

You have proficiency in the Perception and Survival skills.

Thanks to your sensitive antennae, you have advantage on Wisdom (Perception), Wisdom (Survival), and Intelligence (Investigation) checks that involve smell.

You count as one size larger when determining your carrying capacity and the weight you can push, drag, or lift.

The Dynastid is hearty and strong. Your Constitution score increases by 2, and your Strength score increases by 1.