▁the ▁conclus ions ▁of ▁Ma id ment ▁& ▁Bar rett , ▁adding ▁that ▁some ▁supposed ly ▁unique ▁features , ▁such ▁as ▁gro ov es ▁on ▁the ▁par iet al ▁b one , ▁were ▁actually ▁also ▁present ▁in ▁the ▁hol ot ype ▁of ▁C . ▁russ elli ▁and , ▁to ▁various ▁degrees , ▁in ▁other ▁Ch asm osa urus ▁spec im ens . ▁This ▁vari ability , ▁they ▁argued , ▁strongly ▁suggested ▁that ▁M oj oc er at ops ▁was ▁simply ▁a ▁m ature ▁growth ▁stage ▁of ▁C . ▁russ elli . ▁ ▁See ▁also ▁ ▁Tim eline ▁of ▁cer at ops ian ▁research ▁ ▁References ▁ ▁Category : Ch asm osa ur ines ▁Category : L ate ▁C ret ace ous ▁din osa urs ▁of ▁North ▁America ▁Category : F oss il ▁tax a ▁described ▁in ▁ 2 0 1 0 ▁Category : P ale ont ology ▁in ▁Al berta ▁Category : C amp an ian ▁genus ▁first ▁appearances ▁Category : C amp an ian ▁genus ▁ext in ctions <0x0A> </s> ▁The ▁various ▁types ▁of ▁meg al ith ic ▁monuments ▁in ▁n ort he astern ▁Germany ▁were ▁last ▁compiled ▁by ▁E wald ▁Schul dt ▁in ▁the ▁course ▁of ▁a ▁project ▁to ▁exc av ate ▁meg al ith ic ▁tomb s ▁from ▁the ▁Ne ol ith ic ▁Era , ▁which ▁was ▁conducted ▁between ▁ 1 9 6 4 ▁and ▁ 1 9 7 2 ▁in ▁the ▁area ▁of ▁the ▁northern ▁districts ▁of ▁East ▁Germany . ▁His ▁aim ▁was ▁to ▁provide ▁a ▁" class ification