Foraminifera note details
Cushman (1944): "Vertebralina elongata Karrer (Sitz. Akad. Wiss. Wien, vol. 58, pt. 1, 1868, p. 155, pl. 3, fig. 10). This species figured from the Miocene of Kostej does not show the early stages. The uniserial chambers suggest Articulina or Nodophthalmidium. Much material from Kostej was searched, but no specimens referable to this were found, and its generic position must remain undetermined."
Cushman, J. A. (1944). The genus Articulina and its species. <em>Cushman laboratory for foraminiferal research special publication.</em> 10: 1-21. Available for editors [request]