NPCs composing that spawngroup :

greater_scalebone (50%)

greater_skeleton (50%)

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

kurn_greater_skeleton23, range=76 (-220,-135,-23)

greater_skeleton (100%)

kurn_Burynai_excavator3, range=89 (-74,-72,-30)

kurn_Burynai_burrower11, range=40 (-200,-67,-23)

kurn_222212, range=55 (-171,-29,3)

greater_skeleton (65%)
scalebone_skeleton (35%)

kurn_222689, range=80 (-114,-148,-23)

kurn_222690, range=20 (-148,-70,-23)

kurn_222701, range=10 (-159,-94,-119)