Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis Author Linnaeus, Carolus text 1758 Laurentius Salvius Stockholm https://archive.org/download/mobot31753000798865/mobot31753000798865.pdf book 2C6327E1-5560-4DB4-B9CA-76A0FA03D975 https://doi.org/10.5962/bhl.title.542 3922206 Nautilus orthocera [ spec. nov. ] N. testa recta: anfractibus carinato-striatis. It. oel. 140. Mus. Tessin. 86. Nautilus rectus. Scheuch. helv. 7. f. 8. Diluv. 938. Alveolus. Gmelin. act. petrop. vol. 3. p. 246. Gron. lap. 71. Habitat in alto Pelago? Fossilis. Testa frequentissima petrificata in montibus nostris calcareis , inter omnia fossilia nobis nota saepe longissima, non dum visa immutata.