1 9 8 6 , ▁Lower ▁Camb rian , ▁A td aban ian ▁Stage , ▁Si ber ian ▁Platform . ▁ ▁A ▁picture ▁can ▁be ▁found ▁at ▁https :// web . archive . org / web / 2 0 0 3 0 7 3 0 0 4 3 5 3 0 / http :// p aws . w cu . edu / d perl mut r / ear ly fa una . html . ▁ ▁The ▁name ▁Micro dict y on ▁is ▁also ▁used ▁for ▁a ▁genus ▁of ▁green ▁alg ae . ▁ ▁References ▁ ▁Category : Pre histor ic ▁proto st ome ▁gener a ▁Category : Ma ot ians han ▁sh ales ▁foss ils ▁Category : B urg ess ▁Sh ale ▁animals ▁Category : P ale oz o ic ▁life ▁of ▁New ▁Brun sw ick ▁Category : P ale oz o ic ▁life ▁of ▁Nova ▁Scot ia <0x0A> </s> ▁The ▁arr ondissement ▁of ▁Saint - D enis ▁is ▁an ▁arr ondissement ▁of ▁France ▁in ▁the ▁Ré union ▁department ▁in ▁the ▁Ré union ▁region . ▁It ▁has ▁three ▁communes . ▁Its ▁population ▁is ▁ 2 0 4 , 3 0 4 ▁( 2 0 1 6 ), ▁and ▁its ▁area ▁is ▁. ▁ ▁Com position ▁ ▁The ▁communes ▁of ▁the ▁arr ondissement ▁of ▁Saint - D enis , ▁and ▁their ▁IN SEE ▁codes , ▁are : ▁ ▁Saint - D enis ▁( 9 7 4 1 1 ) ▁ ▁Sainte - Marie ▁( 9 7 4 1 8 ) ▁ ▁Sainte - S