NPCs composing that spawngroup :

Burynai_excavator (25%)

greater_scalebone (25%)

lesser_icebone_skeleton (25%)

lesser_icebone_skeleton (25%)

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

kurn_1, range=38 (-121,-186,6)

greater_skeleton (100%)
greater_skeleton (100%)

kurn_7, range=87 (-225,-138,-22)

kurn_19, range=21 (-143,-130,-117)

kurn_21, range=60 (-160,-95,-119)

kurn_27, range=58 (-149,-208,-23)

kurn_29, range=95 (-65,-212,3)

greater_skeleton (50%)
greater_skeleton (50%)

kurn_70, range=66 (-72,-155,-105)

kurn_73, range=87 (-108,-233,-23)

kurn_80, range=87 (-72,-208,-23)

kurn_113, range=94 (-87,-231,-22)

Burynai_burrower (50%)
Burynai_excavator (50%)

kurn_130, range=87 (-143,-238,-23)

kurn_140, range=82 (-56,-151,-23)

Burynai_burrower (100%)

kurn_158, range=93 (-184,-69,-23)

kurn_159, range=71 (-164,-85,-23)

kurn_162, range=94 (-48,-121,132)

kurn_164, range=97 (-83,-232,123)

kurn_171, range=73 (-83,-200,123)

kurn_172, range=49 (-89,-159,88)

kurn_173, range=96 (-55,-201,88)

kurn_183, range=95 (-126,-57,48)

greater_skeleton (100%)