NPCs composing that spawngroup :

greater_skeleton (33%)

scalebone_skeleton (33%)

scalebone_skeleton (34%)

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

kurn_9, range=59 (-228,15,-23)

scalebone_skeleton (100%)

kurn_11, range=61 (-172,-30,4)

greater_scalebone (50%)
greater_skeleton (50%)

kurn_111, range=54 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_112, range=85 (-248,-5,-23)

kurn_113, range=75 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_118, range=95 (-250,-21,-23)

kurn_125, range=34 (-186,0,-23)

kurn_134, range=91 (-84,61,-39)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_135, range=34 (-138,19,-39)

kurn_150, range=72 (-111,72,-39)

Burynai_excavator (100%)

kurn_151, range=65 (-106,18,-39)

kurn_152, range=92 (-88,-11,-30)

kurn_154, range=63 (-164,-32,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_155, range=90 (-171,121,-39)

kurn_160, range=70 (-183,-38,6)

greater_skeleton (100%)

kurn_183, range=98 (-126,-57,48)

greater_skeleton (100%)

kurn_184, range=90 (-85,61,106)

greater_skeleton (50%)
scalebone_skeleton (50%)