▁and ▁the ▁species ▁moved ▁back ▁to ▁Ford illa ▁by ▁E lick i ▁in ▁ 2 0 0 9 . ▁ ▁F . ▁sib ir ica ▁F . ▁sib ir ica ▁was ▁named ▁by ▁I . N . ▁K ras il ova ▁in ▁ 1 9 7 7 ▁based ▁on ▁a ▁series ▁of ▁about ▁ 2 0 ▁foss ils ▁from ▁the ▁Ty user ▁Form ation ▁in ▁N ort he astern ▁Si ber ia . ▁ ▁Since ▁the ▁species ▁description ▁opinions ▁have ▁differ ed ▁on ▁the ▁valid ity ▁of ▁its ▁status , ▁with ▁several ▁studies ▁syn onym izing ▁it ▁with ▁F . ▁tro y ensis . ▁ ▁The ▁original ▁description ▁c ited ▁the ▁pla cement ▁and ▁more ▁rounded ▁outline ▁of ▁the ▁front ▁ad duct or ▁scar ▁along ▁with ▁the ▁morph ology ▁of ▁d ors al ▁edge ▁as ▁reason ▁for ▁ere ction ▁of ▁the ▁new ▁species . ▁ ▁F . ▁tro y ensis ▁The ▁type ▁species ▁for ▁Ford illa , ▁F . ▁tro y ensis ▁was ▁first ▁described ▁by ▁the ▁French ▁pale ont ologist ▁Jo achim ▁Bar ran de ▁in ▁ 1 8 8 1 . ▁The ▁description ▁was ▁based ▁on ▁a ▁group ▁of ▁five ▁foss ils ▁found ▁in ▁Camb rian ▁sed iments ▁exposed ▁at ▁T roy , ▁New ▁York ▁and ▁purchased ▁by ▁S . W . ▁Ford . ▁ ▁The ▁species ▁has ▁since ▁been ▁found ▁in ▁Camb rian ▁str ata ▁of ▁Green land ▁and ▁New found land ▁in ▁North ▁America . ▁Spec im ens ▁have ▁been ▁confirmed ▁from ▁the ▁island ▁of ▁Born holm , ▁Den