NPCs composing that spawngroup :

Burynai_excavator (100%)

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

kurn_1, range=80 (-111,-123,6)

greater_skeleton (100%)

kurn_4, range=99 (15,-58,127)

an_odd_mole (100%)

kurn_5, range=79 (-29,-107,106)

greater_scalebone (100%)

kurn_11, range=90 (-172,-30,4)

greater_scalebone (50%)
greater_skeleton (50%)

kurn_18, range=79 (-70,30,-39)

Burynai_excavator (100%)

kurn_21, range=90 (-160,-95,-119)

kurn_63, range=84 (-24,-109,-105)

Burynai_excavator (100%)

kurn_71, range=49 (-41,-75,-107)

kurn_90, range=26 (-75,-73,-30)

kurn_91, range=77 (-30,8,-39)

kurn_92, range=94 (11,-57,-39)

kurn_111, range=69 (-146,-18,-23)

Burynai_Excavator (100%)

kurn_113, range=42 (-114,-19,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_117, range=63 (-31,-85,-30)

Burynai_Excavator (50%)
Burynai_Excavator (50%)

kurn_135, range=86 (-138,19,-39)

kurn_136, range=5 (-84,-53,-30)

kurn_149, range=60 (-63,9,-30)

kurn_151, range=69 (-106,18,-39)

kurn_152, range=37 (-88,-11,-30)

kurn_153, range=43 (-62,-10,-30)

kurn_154, range=82 (-164,-32,-23)

Burynai_Excavator (50%)
Burynai_excavator (50%)

kurn_159, range=88 (-164,-85,-23)

kurn_160, range=57 (-53,1,9)

greater_skeleton (100%)

kurn_162, range=80 (-48,-121,132)

kurn_166, range=93 (-50,39,104)

kurn_183, range=26 (-62,-65,129)

greater_skeleton (100%)
greater_skeleton (100%)

kurn_185, range=56 (-39,-12,104)

kurn_186, range=30 (-58,-30,104)

kurn_193, range=93 (-35,31,-39)

thick_boned_skeleton (100%)