Maturity - let's put it this way - you can almost make a full soccer team with all the Zyn'dos maturity levels from lvl 16 weak to lvl 32 king.
There are 2 main Zyn'dos spawns. The spawn west (127700/79000) of the Zyn tp is important because of The Chief's Request mission. The second spawn is east of Setter's Dock - about 1 tp II chip jump away. In this spawn you are going through some narrow valleys, so it's better to work the sides than go down the middle. You might want to carry a few probes in this area as well. There are probably other spawns but I only hunt those 2 areas. Zyn are aggressive, and if you are a pistoleer or sword person you will find 3 or 4 want a piece of you at the same time. They also have an insanely fast heal rate.
Confirmed loot VU 17.3
ammo
lesser claw
wool
fine wool
animal hide
animal eye oil
animal adrenal oil
animal muscle oil
animal thyroid oil
animal oil residue
partial eye remains
medium grade power supply
weak cloth enhancer
enhanced cloth extractor
second rate cloth enhancer
basic wood enhancer
advanced wood enhancer
advanced mineral extractor
tier I-IV component
paint can brown and yellow
interactive simplifier
surface hardener component
blazars ftw
Items (updated as I loot them)
Imperium HK 3900 L
Lacerating Nano Chip II L
Arsonistic Chip II L
H.E.A.R.T M7 L fap
my gear - nothing fancy - jarhead 5B or Viceroy 6A and about a lvl30 gun