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Davidson, Thomas, Observations on the Genus Porambonites. (With 1 PL) in: Geol. 

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White, C. A., Note on the occurrence of Productus giganteus in California. (With 1 PI.) 

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Aitken, John, On Productus Llangollensis, from the Eglwseg Rocks, Llangollen, North 

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Productus sublaevis : s. P. h u m e r o s u s. 



Billings, E., Note on a Question of Priority [Rhinobolus], in : Americ. Journ. Sc.a. Arts. 

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(Brachiopoden-Genus Obolellina Billings, resp. Khinobolus Hall.) 



Rejoinder to Prof. Hall's Reply to a "Note on a question of a Priority." ibid. 



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Ghoffat, (P.), Über Wanderungen u. Artenübergänge bei den jurassischen Rhynchonel- 

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Hall, James, The genus Rhynchonella, with observations on the R. (Atrypa) incre- 

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wold Nat. Club. Vol. 2. 1860. Appendix. (8 p. a. 6 1. of expl. of PI.) 

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densis u. a.) in: Verh. d. naturhist. Ver. d. preuss. Rheinl. u. Westphal. 33. Jhg. 



(4. F. 3. Jhg.) 1876. Corrspbl. p. 130-134. 

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nitziana. in: Ann. Mag. Nat. Hist. 3. Ser. Vol. 16. 1865. p. 305—307. 

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