NPCs composing that spawngroup :

Burynai_Excavator (33%)

Burynai_excavator (34%)

greater_skeleton (33%)

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

kurn_9, range=44 (-228,15,-23)

scalebone_skeleton (100%)

kurn_11, range=33 (-172,-30,4)

greater_scalebone (50%)
greater_skeleton (50%)

kurn_21, range=98 (-160,-95,-119)

kurn_111, range=43 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_112, range=62 (-248,-5,-23)

kurn_113, range=74 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_118, range=67 (-250,-21,-23)

kurn_129, range=72 (-228,-60,-23)

Burynai_Excavator (100%)

kurn_135, range=51 (-138,19,-39)

kurn_151, range=82 (-106,18,-39)

kurn_152, range=98 (-88,-11,-30)

kurn_154, range=38 (-164,-32,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_158, range=69 (-184,-69,-23)

kurn_159, range=87 (-164,-85,-23)

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

greater_skeleton (100%)

kurn_179, range=34 (-170,31,4)

kurn_183, range=82 (-126,-57,48)

greater_skeleton (100%)