NPCs composing that spawngroup :

greater_scalebone (100%)

NPCs spawning around that spawngroup :
(Max range : 100)

kurn_8, range=95 (99,9,4)

kurn_16, range=60 (169,31,-134)

lesser_charbone_skeleton (50%)
lesser_icebone_skeleton (50%)

kurn_34, range=77 (156,-98,-103)

lesser_charbone_skeleton (100%)

kurn_40, range=59 (153,-74,-104)

kurn_56, range=43 (171,14,-120)

kurn_58, range=72 (180,46,-119)

Burynai_Excavator (50%)
Burynai_sapper (50%)

kurn_64, range=43 (178,16,-120)

kurn_75, range=64 (248,-49,-118)

Burynai_sapper (50%)
lesser_icebone_skeleton (50%)

kurn_76, range=38 (223,-41,-118)

Burynai_excavator (50%)
Burynai_sapper (50%)

kurn_77, range=96 (284,-28,-120)

Burynai_excavator (50%)
greater_scalebone (50%)

kurn_88, range=65 (155,-83,-24)

Burynai_burrower (50%)
Burynai_Excavator (50%)

kurn_97, range=65 (128,-51,-49)

kurn_98, range=85 (104,-44,-49)

kurn_99, range=65 (124,-14,-49)

kurn_107, range=80 (121,-71,-24)

kurn_109, range=93 (143,-108,-24)

kurn_114, range=70 (162,-92,-24)

kurn_115, range=98 (137,58,-39)

Burynai_Excavator (50%)
lesser_icebone_skeleton (50%)

kurn_174, range=93 (130,47,104)

kurn_182, range=53 (137,-42,9)

scalebone_skeleton (100%)