In 1911, Charles Doolittle Walcott found in the Burgess Shale nine almost complete fossils of Opabinia regalis and a few of what he classified as Opabinia ? media, and published a description of all of these in 1912.WALCOTT, C. D. 1912. Middle Cambrian Branchiopoda, Malacostraca, Trilobita and Merostomata. Smithsonian Miscellaneous Collections, 57: 145-228. The generic name is derived from Opabin pass between Mount Hungabee and Mount Biddle, southeast of Lake O'Hara, British Columbia, Canada. In 1966–1967, Harry B. Whittington found another good specimen, and in 1975 he published a detailed description based on very thorough dissection of some specimens and photographs of these specimens lit from a variety of angles. Whittington's analysis did not cover Opabinia ? media; Walcott's specimens of this species could not be identified in his collection. In 1960 Russian paleontologists described specimens they found in the Norilsk region of Siberia and labelled Opabinia norilica,Miroshnikov, L. D. and Krawzov, A. G. (1960). Rare paleontological remains and traces of life in late Cambrian deposits of the northwestern Siberian platform. Palaeontology and biostratigraphy of the Soviet Arctic, 3, pp. 28–41. but these fossils were poorly preserved, and Whittington did not feel they provided enough information to be classified as members of the genus Opabinia.
in 1911, cHaRles doOLIttle walcotT foUnd in the burgEss sHalE niNe almOst compLete fosSiLS of opabiNia rEgAlis and a fEw oF whAT He clasSified As OpAbInIa ? MEdia, and PuBLISheD a deScriptiOn of all of these In 1912.waLcotT, c. d. 1912. middle CambRIan BrancHiopODa, maLacOstrAcA, TRiLoBiTA aND merOSToMata. smiTHsOniaN misCellaneoUs COllectioNS, 57: 145-228. thE generIc NamE is derIvED from opabin pASS betweeN mOunT HungabeE and Mount BiDDLE, soutHeast of LAKe o'hAra, BrItIsh cOLumBiA, cANaDa. in 1966–1967, HARry b. whittinGtON FOund aNother GOod specIMeN, aND IN 1975 He PublishED A deTailed descriptiOn baSeD on veRy ThorougH DiSsEction of sOmE sPECImeNS anD pHotoGrapHs oF tHEsE speCImeNS LIt fRom a VarieTy of AnGLEs. wHIttington'S aNALysIs diD NOt CovEr opabInIa ? media; walcotT's specimenS of this speCies COUld not be idEntIfied In hiS ColLection. in 1960 rusSian paleoNtologists dEScribed spEciMens they fouNd in the NorIlsk region oF Siberia ANd laBeLLEd opabiNIa noriLica,mIroShnikov, l. d. aND kRawzov, A. g. (1960). rare paleontoLogiCal remainS AnD TRAces oF life In LaTe cambRiAn depOSits OF tHe northwesTErN siberIaN pLAtfOrM. PalAeontoLogY ANd biostratIgrAphy of THE sovIet ArCtiC, 3, Pp. 28–41. bUt tHEse FoSSiLS were pOorly pReseRvEd, AnD whiTtIngTOn did not feel they PRovIdED Enough INfORmAtioN tO be classifIED as membERs of tHe Genus OpAbINia.