Description of a new species of panenka from the corniferous limestone of Ontario. Note on the occurrence of paucispiral opercula of gasteropoda in the Guelph formation of Ontario Note on the occurrence of paucispiral opercula of gasteropoda in the Guelph formation of Ontario Whiteaves, Joseph Frederick, 1835-1909 creator text book S.l s.n 1891? 1891
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ENG Gastropoda, Fossil Ontario Paleontology FC 02 0203 no. 62309 AEU 564/.3 CIHM/ICMH microfiche series, no. 62309 https://www.biodiversitylibrary.org/bibliography/60963 0665623097 317965135 10.5962/bhl.title.60963 CaOOCIHM