File:Karpinsky 1899 Helicoprion bessonowi Fig. 73.png

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English: Alexander Karpinsky's 1899 hypothesis of the placement of the tooth whorl on Helicoprion bessonowi.
Date
Source Карпинскій, А. (1899). "Объ остаткахъ eдестидъ и о новомъ ихъ родѣ Helicoprion". Записки Императорской Академіи Наукъ = Mémoires de l'Académie impériale des sciences de St.-Pétersbourg. VIIIe série. По Физико-математическому отдѣленіи = Classe physico-mathématique. 8 (7): 64. Рис. 73
Author Alexander Karpinsky

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